共查询到20条相似文献,搜索用时 31 毫秒
1.
Thomeer M Vanbeckevoort D Van Breuseghem I Petré C De Vuysere S Coenegrachts K Miserez M 《European radiology》2000,10(4):674-676
This article presents a case of appendicitis 7 years after open appendectomy. Together with the apparent CT findings we discuss
the current literature of this issue.
Received: 21 April 1999; Revised: 11 August 1999; Accepted: 13 August 1999 相似文献
2.
Radiation therapy is commonly applied as a primary or adjuvant therapy for malignancies. One of the major complications following
radiation therapy is the necrosis of the otherwise normal surrounding soft tissues and/or bone. Post-radiation myelopathy
rarely occurs when the spinal cord is included within the radiation field, in cases of high total radiation doses or for high
radiation doses per fractionation. Up until the present, no tolerance dose for the spinal cord has accurately been defined
and no treatment has proved satisfactory. Hyperbaric oxygen therapy is already currently used as adjuvant treatment for osteoradionecrosis
and for radionecrosis of soft tissues with satisfactory results, whereas results for the treatment of post-attinic myelitis
were contradictory. The aim of our report is to describe a case of radiation myelitis with a progressive improvement in the
clinico-radiologic picture following hyperbaric oxygen treatment.
Received: 18 March 1999; Revised: 7 September 1999; Accepted: 15 November 1999 相似文献
3.
Maleux G van Steenbergen W Stockx L Vanbeckevoort D Wilms G Marchal G 《European radiology》2000,10(7):1127-1129
We report a case of retroperitoneal hemorrhage due to multiple, small pseudoaneurysms complicating a chronic alcoholic pancreatitis.
Cross-sectional imaging with CT and US could not clearly depict these vascular lesions. Selective arteriography of the superior
mesenteric and gastroduodenal arteries clearly showed the small pseudoaneurysms and definitive treatment was performed by
transcatheter embolization using coils. Eight months after successful embolization, the patient is asymptomatic without any
recurrent bleeding.
Received: 18 June 1999; Revised: 13 October 1999; Accepted: 15 October 1999 相似文献
4.
Sakellariou P Protopapas A Kyritsis N Voulgaris Z Papaspirou E Diakomanolis E 《European radiology》2000,10(6):906-908
Mesodermal tumors of the urinary bladder are rare and the majority of them are malignant. We report a case of an intramural
leiomyoma of the bladder presenting with symptoms of a mild lower urinary tract infection. The patient was managed with partial
cystectomy and the outcome was excellent.
Received: 31 May 1999; Revised: 21 September 1999; Accepted: 21 September 1999 相似文献
5.
Dissection of the portal vein is a rare entity which has been rarely described during transjugular intrahepatic portosystemic
shunt (TIPS) procedure. We report three cases of dissection during this procedure and their complications. One dissection
was immediately treated with coaxial stents. The two others were complicated either by a thrombus or by a false aneurysm.
In the first case a second parallel stent was used to treat this complication. The patient with the portal vein false aneurysm
was transplanted 4 days after this diagnosis. Portal vein dissection in TIPS procedure appeared to be less rare than has been
reported and must be considered as a potential cause of TIPS dysfunction.
Received: 5 May 1999; Revised: 14 July 1999; Accepted: 14 July 1999 相似文献
6.
We report an 8-month-old infant presenting with stridor caused by a nonpalpable neck mass discovered at imaging and surgery.
The diagnosis of aberrant thymic tissue was confirmed at histopathology. The authors reviewed the literature and discuss the
embryology, imaging findings and differential diagnosis of this rare disorder.
Received: 1 July 1999; Revised: 3 September 1999; Accepted: 6 September 1999 相似文献
7.
Virtual computed tomography colonoscopy: artifacts, image quality and radiation dose load in a cadaver study 总被引:2,自引:0,他引:2
Springer P Stöhr B Giacomuzzi SM Bodner G Klingler A Jaschke W zur Nedden D 《European radiology》2000,10(1):183-187
The purpose of our study was to evaluate the interdependency of spatial resolution, image reconstruction artifacts, and radiation
doses in virtual CT colonoscopy by comparing various CT scanning protocols. A pig's colon with several artificial polypoid
lesions was imaged after air insufflation with helical CT scanning using 1-, 3-, and 5-mm collimation, and pitch values varying
from 1.0 to 3.0. Virtual endoscopic images and “fly through” sequences were calculated on a Sun Sparc 20 workstation (Navigator
Software, GE Medical Systems, Milwaukee, Wis.). Several reconstruction artifacts as well as overall image quality were evaluated
by three independent reviewers. In addition, radiation doses for the different CT protocols were measured as multiple-scan
average dose using a 10-cm ion chamber and a standard Plexiglass body phantom. Generally, image quality and reconstruction
artifacts were less affected by pitch values than by beam collimation. Thus, narrow beam collimation at higher pitch values
(e. g. 3 mm/2.0) seems to be a reasonable compromise between quality of virtual endoscopic images and radiation dose load.
Received: 4 February 1999; Revised: 16 June 1999; Accepted: 17 June 1999 相似文献
8.
Gallstone ileus: CT findings 总被引:6,自引:0,他引:6
Gallstone ileus is a rare complication of recurrent gallstone cholecystitis. The classic radiographic triad of small bowel
obstruction, pneumobilia and ectopic gallstone on abdominal plain radiograph is described with CT imaging. Because of the
better resolution of CT compared with abdominal radiography and its recent accession to emergency use, radiologists should
be aware of CT findings of gallstone ileus. We report a case in which gallstone ileus was initially diagnosed by CT.
Received: 30 July 1999; Revised: 18 October 1999; Accepted: 18 October 1999 相似文献
9.
A case of isolated bilateral xanthogranulomatous perinephritis, which presented as a symmetrical irregular perirenal rim
of soft tissue, is reported. Differential diagnosis and image features on ultrasound, computed tomography, and magnetic resonance
are discussed.
Received: 20 May 1999; Revised: 20 July 1999; Accepted: 22 July 1999 相似文献
10.
Posttraumatic adrenal hemorrhage is a frequent finding after severe abdominal trauma and can have important clinical implications
if it is bilateral. With the increased use of helical CT in the evaluation of trauma patients, posttraumatic adrenal hematoma
is more frequently diagnosed. We present the CT findings of a unilateral posttraumatic adrenal hemorrhage where the diagnostic
findings only appeared in the follow-up study. We think that mild enlargement of the adrenal gland in a trauma patient can
be an early sign of an impending adrenal hemorrhage.
Received: 10 May 1999; Revised: 28 July 1999; Accepted: 18 August 1999 相似文献
11.
Okamoto K Ito J Takahashi H Emura I Mori H Furusawa T Sakai K Higuchi T Tokiguchi S 《European radiology》2000,10(1):170-174
We present a case of solitary infantile myofibromatosis of the skull in a 3-month-old boy. A right parietal subcutaneous
lump was found at birth, and it increased in size over the ensuing 3 months. Surgery was performed, and a diagnosis of myofibromatosis
was confirmed histopathologically. Solitary myofibromatosis of the skull is extremely rare. The radiographical, CT, and MR
appearances, as well as histopathological findings, are described in this article.
Received: 30 December 1998; Revised: 21 April 1999; Accepted: 11 May 1999 相似文献
12.
Schneider G Uder M Altmeyer K Bonkhoff H Gruber M Kramann B 《European radiology》2000,10(9):1395-1400
We report a case of littoral cell angioma (LCA) of the spleen, a recently described splenic pathology, which imaging characteristics
and pathologic morphology have been discussed only by a few authors. The imaging findings in unenhanced and contrast-enhanced
MRI and CT as well as histologic specimen are presented. Diagnosis was made after elective splenectomy. Differential diagnosis
of splenic tumors as well as the imaging findings in this particular case are discussed.
Received: 7 July 1999; Revised: 18 January 2000; Accepted: 19 January 2000 相似文献
13.
We report the case of a 60-year-old woman with a recent history of a cerebrovascular accident. Because of clinical suspicion
of pulmonary embolism and negative Doppler ultrasound findings of the lower limbs, spiral computed tomography of the pulmonary
artery was performed and demonstrated pulmonary emboli. We emphasize the role of computed tomography of the abdomen, performed
3 min after the thoracic acquisition, which showed an unsuspected thrombus within the abdominal aorta and the left renal artery
with infarction of the left kidney. Paradoxical embolism was highly suspected on computed tomography data and confirmed by
echocardiography which demonstrated a patent foramen ovale.
Received: 23 April 1999; Revised: 17 August 1999; Accepted: 18 August 1999 相似文献
14.
Petit P Vivarrat-Perrin L Champsaur P Juhan V Chagnaud C Vidal V Gaubert JY Bartoli JM Dessi P Zanaret M Moulin G 《European radiology》2000,10(7):1184-1189
The aim of this study was to describe cross-sectional imaging features of recurrent papilloma of the nasal fossa and paranasal
sinuses and to evaluate the role of MR and CT in the postoperative follow-up of this lesion. Magnetic resonance imaging and
CT of ten patients who presented recurrence of inverted papilloma were reviewed and correlated to initial imaging, endoscopy,
and surgical reports. Imaging patterns of recurrent inverted papilloma are identical to those of initial tumors and recurrence
location is closely related to the site of the former lesion. Magnetic resonance is more efficient than CT for the diagnosis
and evaluation of extensions. Magnetic resonance supplies the deficiencies of endoscopy in case of extensions to the frontal
sinus or the lateral recess of the antrum, especially if mucosal hyperplasia or sinusitis is associated. Magnetic resonance
imaging is the first imaging modality to perform in the follow-up after removal of inverted papilloma.
Received: 28 April 1999; Revised: 18 November 1999; Accepted: 19 November 1999 相似文献
15.
Demeyere A De Somer F Perdieus D Van Den Hauwe L Lemmens L Schillebeeckx J 《European radiology》2000,10(2):308-309
The CT and MRI findings in a case of chondrosarcoma of the hyoid bone are reported. Although chondrosarcoma is the second
most common primary malignant bone tumor, only 10 % of chondrosarcomas occur in the head and neck region. The hyoid bone is
a rare site of involvement with only seven cases reported previously.
Received: 19 February 1999; Revised: 19 April 1999; Accepted: 11 May 1999 相似文献
16.
Rectal tumour staging: MR imaging using pelvic phased-array and endorectal coils vs endoscopic ultrasonography 总被引:5,自引:0,他引:5
Blomqvist L Machado M Rubio C Gabrielsson N Granqvist S Goldman S Holm T 《European radiology》2000,10(4):653-660
The aim of this study was to compare MR imaging and endoscopic ultrasonography (EUS) for the local staging of rectal tumours.
Forty-nine patients were examined on a 1.5-T MR unit using either a pelvic phased-array coil (n = 37) alone or combined with an endorectal coil (n = 12). Sagittal and axial sequences with T2-weighted fast spin-echo and axial T1-weighted spin-echo techniques were employed.
The EUS technique was performed using a flexible endosonoscope. The results were compared with findings at histopathological
sectioning of the specimen. The T-stage on MR correlated with histopathology in 32 of 49 patients and on EUS in 29 of 49 patients.
The N-stage on MR correlated with histopathology in 22 of 49 patients and on EUS in 26 of 49 patients. Tumour penetration
of the rectal wall was predicted by MR with 86 % sensitivity and 65 % specificity, and by EUS with 89 % sensitivity and 33
% specificity. Preoperative radiotherapy was administered to 40 of the patients after the examinations which may explain some
of the overstaging by MR and EUS. Three patients with surgically and histopathologically confirmed invasion of neighbouring
organs in the pelvis were detected preoperatively on MR but none on EUS. Tumour penetration of the rectal wall and local lymph
node metastases cannot accurately be predicted with MR or EUS. Magnetic resonance, however, seems to be more useful for preoperative
identification of clinically occult advanced disease.
Received: 18 February 1999; Revised: 17 September 1999; Accepted: 20 September 1999 相似文献
17.
Coronary arteriovenous fistula are uncommon if not rare, but represent the most prevalent hemodynamically significant congenital
malformations of the coronary arterial circulation. The goal of this report is to evaluate the use of 3D volume rendering
from transaxial breathhold coronary MR angiograms to visualize coronary arteriovenous fistulas. Coronary MR angiography offers
a new non-invasive technique that accurately defines the anatomy of these malformations, setting the stage for surgical intervention.
Received: 15 July 1999; Revised: 13 October 1999; Accepted: 15 October 1999 相似文献
18.
A 53-year-old-man underwent US-guided percutaneous thermal ablation with a cooled-tip needle of three liver metastases from
gastric cancer. Six days later, the patient was re-admitted for melena, scleral jaundice, and anemia. Abdominal US disclosed
echogenic material in the gallbladder lumen (hemobilia) and a focal lesion with mixed echotexture in segment III (hepatic
hematoma). On day 5 portal cavernomatosis was diagnosed at US and confirmed by color Doppler and a helical CT exam. The case
described emphasizes that radio-frequency interstitial hyperthermia may cause not only traumatic injury of the liver parenchyma
but also thermally mediated damage of vascular structures.
Received: 14 January 1999; Revised: 21 May 1999; Accepted: 9 June 1999 相似文献
19.
Parkkola RK Komu ME Kotilainen EM Valtonen SO Thomsen C Gideon P 《European radiology》2000,10(9):1442-1446
The purpose of this study was to measure the cerebrospinal fluid (CSF) velocity and flow in the aqueduct in patients with
wide ventricles with or without signs of normal pressure hydrocephalus (NPH) before and after shunt surgery. We studied 18
patients with wide ventricles with MRI and measured the CSF velocity values in the aqueducts. Twelve patients with the clinical
triad of NPH were examined. Six patients were studied only before shunt surgery and 6 patients were studied both before and
after shunt surgery. Three patients with wide ventricles without clinical triad of NPH, and 3 patients with hydrocephalus
following subarachnoid hemorrhage were also examined. Seven NPH patients with hyperdynamic CSF flow and three NPH patients
with normal CSF velocity and flow values showed a positive clinical response to shunt surgery. Two of the three patients with
hydrocephalus and hyperdynamic CSF flow values in the aqueduct secondary to subarachnoid bleeding responded to shunt surgery.
One patient with same disease and low CSF velocity and flow values did not respond. No change was detected in the CSF flow
values of the aqueduct when measurements before and after shunt surgery were compared. Ventriculoperitoneal shunting does
not change the CSF dynamics in the aqueduct.
Received: 8 March 1999; Revised: 30 November 1999; Accepted: 23 February 2000 相似文献
20.
Sato M Ishida H Konno K Naganuma H Komatsuda T Hamashima Y Watanabe S 《European radiology》2000,10(2):362-364
Congenital absence of the horizontal portion of the left portal vein is very rare and has been very reported sporadically.
We present three such cases referred from other hospitals with a diagnosis of intrahepatic vascular anomaly. Color Doppler
ultrasound not only confirmed the diagnosis but also allowed a quantitative measurement of blood flow in these cases. Although
it is a very rare condition, knowledge of the ultrasound and color Doppler findings helps in establishing the diagnosis of
this congenital anomaly.
Received: 9 July 1999; Revised: 25 October 1999; Accepted: 25 October 1999 相似文献