电子束CT腮腺造影并三维重建在腮腺肿块诊断中的应用

目的：探索电子束ＣＴ腮腺造影泛影葡胺的最佳浓度，电子束ＣＴ平扫、腮腺造影ＣＴ和三维ＣＴ在腮腺肿块诊断中的应用价值。材料和方法：对１６例腮腺肿块分别进行电子束ＣＴ平扫，４５％、６０％和７６％三种不同浓度泛影葡胺腮腺造影ＣＴ扫描，腮腺造影图像应用四种方法进行三维重建，显示结果进行统计学分析和与手术病理对照分析。结果：腮腺造影ＣＴ泛影葡胺浓度以６０％最佳，腮腺造影ＣＴ较电子束ＣＴ平扫对腮腺肿块的显示更为准确。三维ＣＴ对腮腺肿块和其与面神经的关系显示得更为直观，容积显示法可同时显示腮腺肿块和腮腺内导管的改变，较表面显示法更有价值。结论：电子束ＣＴ腮腺造影并三维重建是诊断腮腺肿块非常有价值的检查手段。     

腮腺区肿块性病变的CT诊断

腮腺区肿块是口腔颌面外科较为常见的病变。７０年代末，ＣＴ扫描开始应用于腮腺区肿瘤的诊断，取得良好效果。现就我院在１９９３～１９９８年间１５例临床腮腺区肿块经ＣＴ扫描诊断，结合病理进行回顾性分析，现报导如下。１一般资料男７例，女８例，年龄为２３～７０岁...     

腮腺炎性病变的CT表现

目的 探讨ＣＴ对腮腺炎性病变的诊断价值。材料与方法 回顾性分析经病理证实的１２例腮腺炎性病变的ＣＴ表现,并与病理所见进行对照研究。结果 １２例腮腺,７例双侧腮腺呈弥漫性增大,密度增高;５例单侧腮腺内见软组织肿块影,其中３例肿块较弥漫,密度不均。边界模糊,２例肿块较局限,密度较均匀,边缘模糊;１例腮腺体积缩小,手术均未发现腮腺内肿块。结论 ＣＴ对大部分腮腺炎能作出正确诊断．     

涎腺区肿块的CT诊断

目的：探讨涎腺区病变的ＣＴ诊断价值。方法：回顾性总结经手术病理证实的３４例涎腺区肿块的临床与ＣＴ资料，对其ＣＴ表现进行了分析。结果：３４例中有２６例术前ＣＴ准确诊断，诊断符合率７３．５％，腮腺区２４例，颌下腺区１０例。良性肿块的ＣＴ表现：结节状（１３例），分叶状（５例），不规则形（３例）。大多数肿块边缘光滑，边界清晰，密度均匀。病理对照：有完整包膜１８例，无完整包膜３例。恶性肿块ＣＴ表现呈不规则形（１３例），边缘毛糙，与周围正常组织分界不清。病理对照：肿块多数无包膜（１１例）。结论：涎腺ＣＴ扫描的最大优势在于定位准确，能明确病变的范围及其与周围组织的关系，同时可根据肿块的形态及密度较好地鉴别其性质。     

双侧多发性腮腺腺淋巴瘤一例

患者　男 ,6 3岁。双侧腮腺肿块半年余而入院。体检 :一般情况可。双侧腮腺可扪及质硬肿块 ,左右侧各 1枚 ,大小分别为 3ｃｍ× 4ｃｍ× 3ｃｍ和 2ｃｍ× 2ｃｍ× 2ｃｍ ,无压痛 ,活动度可。余无异常。有嗜烟习惯。ＣＴ平扫示 :右侧腮腺浅叶后下部有圆形肿块 1枚 ,边缘清晰、光整 ,直径 2ｃｍ ;其内侧还有一小结节影 ;左侧相同位置也有圆形肿块 1个 ,直径 3ｃｍ ;其内密度尚均匀 (附图 )。分别行左右腮腺肿块摘除术 ,术中见肿块位于腮腺浅叶 ,有包膜 ,呈红色 ,质地中等 ,右侧为大小肿瘤各 1个 ,左侧仅有 1个 ,大小与ＣＴ所见相仿。病理诊断 …     

腮腺肿瘤的CT诊断

目的：评估ＣＴ检查对腮腺肿瘤鉴别诊断的价值。方法：回顾性分析了经病理证实的２４例腮腺肿瘤ＣＴ表现,并同病理所见进行对照研究,采用双盲阅片评估ＣＴ对腮腺良、恶性肿瘤的鉴诊价值。结果：９例良性肿瘤,密度均匀,边界清楚者６例,密度不均、部分境界不清３例。１５例恶性肿瘤,１２例密度不均,边界模糊;３例密度较均,境界清楚。２４例肿瘤的ＣＴ图像中均未见面神经显示。双盲阅片结果表明：ＣＴ对７８．９％的腮腺肿块能正确定性（炎症、良或恶性肿瘤）,但不能确认其组织学类型。结论：ＣＴ能鉴别大多数的良、恶性肿瘤,但不能确定其组织学类型。     

超声诊断腮腺肿块的临床价值

目的探讨超声对腮腺肿块的诊断价值。方法回顾分析52例腮腺肿块超声特点,并与术后病理结果对照。结果超声对腮腺肿块病灶的显示率为100%。对腮腺良性肿块诊断符合率85%,恶性肿块66%。结论超声对腮腺肿块的诊断及鉴别诊断具有可靠、方便的优势。     

腮腺区肿块性病变的高频超声诊断

探讨高频超声诊断腮腺区肿块性病变的价值。材料与方法回顾性分析37例经病理/手术证实的腮腺区 肿块。结果术前B超诊断正确32例，其准确率为86.5％，误诊5例，误诊率为13.5％。结论高频超声诊断腺腺区肿 块，准确率高，操作简便且能显示肿瘤良、恶性，并可进行腮腺内、外肿瘤的鉴别诊断。     

腮腺混合瘤的CT分析

本文收集我院 1992～ 1998年行ＣＴ检查并经手术病理证实为腮腺混合瘤 41例 ,加以回顾性分析以归纳其ＣＴ表现。1　资料与方法1.1　资料　腮腺混合瘤 41例 ,男 3 1例 ,女 10例 ,年龄 3 0～ 65岁 ,平均 (4 7.5± 17.5 )岁。所有患者均以发现耳下方肿块就诊 ,病程 2 0ｄ～ 2年 ,体检于腮腺区触及质软或略硬肿块 ,无压痛 ,手术切除病理证实为腮腺混合瘤。1.2　方法　使用日本岛津 45 0 0 -ＴＦＣＴ扫描机 ,行ＣＲ图像平行肿块轴位定位 ,全部病例均行平扫及增强扫描 ,层厚 5ｍｍ ,层距 5ｍｍ ,扫描时间 2 .8ｓ。造影剂为 60 %泛影葡胺 5 0ｍｌ,…     

CT 对腮腺区肿块的诊断价值

评价ＣＴ对腮腺肿瘤的诊断价值。方法８８例腮腺区肿瘤进行ＣＴ平扫,ＣＴ增强扫描和／或腮腺造影ＣＴ扫描。结果：７８例为腺内肿瘤,其中７例为恶性;１０例为腺肿瘤。对ＣＴ肋腺区肿瘤定位准确,能准确显示肿瘤的范围,大小,数目及浸润情况。     

腮腺肿块的电子束CT平扫、腮腺造影CT和三维CT的对比研究

目的探索电子束CT平扫(EBCT)、腮腺造影CT和三维CT对腮腺肿块诊断的优缺点。材料与方法对43例腮腺肿块分别进行EBCT平扫、60％泛影葡胺腮腺造影CT扫描、腮腺造影图像应用四种方法进行三维重建,显示结果进行统计学分析和与手术病理结果对照分析。结果腮腺造影CT较EBCT平扫对腮腺肿块的显示更为准确,三维CT对腮腺内导管的显示较腮腺造影CT更为理想。容积显示法三维重建对腮腺内导管的显示较好,而表面显示法三维重建有利于显示病变与周围骨结构的关系。结论EBCT、腮腺造影和三维重建对腮腺肿块的诊断具有重要的应用价值。     

腮腺病变的CT诊断

目的探讨腮腺良、恶性病变的CT特点。方法回顾性分析52例经手术病理及临床证实的腮腺病变的CT表现,其中良性肿瘤29例,恶性肿瘤13例,结核4例,慢性腮腺炎6例。结果52例中,48例表现为腮腺内或腮腺区肿块,良性肿瘤形态规则,边界清楚,占82.8%(24/29);恶性肿瘤形态不规则,边界模糊不清,占76.9%(10/13);腮腺结核表现为密度不均、边界较模糊的结节或肿物,并有结节样钙化和腮腺周围淋巴结肿大,病灶及肿大淋巴结均呈环形强化;4例弥漫性炎症表现为一侧或双侧腮腺弥漫性肿大,密度增高;2例为局限炎症,呈形态不规则肿块状,边界不清。结论CT扫描对腮腺病变定位敏感性为100%,对各类腮腺病变的定性诊断有重要价值,增强扫描可提高其定性诊断率。     

Computed tomography of benign masseteric hypertrophy

Benign masseteric hypertrophy (BMH), although an uncommon condition, is important in the differential diagnosis of parotid region masses. We believe CT is the ideal imaging modality for investigating patients with parotid region masses and that it has proved to be most useful in the diagnosis of masseteric hypertrophy. We present three cases of BMH and describe and discuss the CT findings and differential diagnosis of parotid region masses.     

Benign lymphoepithelial parotid tumors in AIDS patients: CT and MR findings in nine cases

Benign lymphoepithelial parotid neoplasm with associated cervical adenopathy is a newly described head and neck manifestation of HIV infection, characterized previously as purely cystic masses on both CT and MR evaluations. The CT and MR findings in nine cases of surgically proved benign lymphoepithelial parotid lesions are presented. Five (56%) of the nine cases demonstrated masses that appeared other than cystic, reflecting a greater variety of radiologic appearances than previously reported. The majority of these cystic masses contained solid components and therefore could not be labeled as cysts; instead, they were considered to be benign lymphoepithelial parotid lesions. For patients with parotid gland enlargement, the lack of a characteristic CT/MR appearance of these lesions necessitates an evaluation of clinical history and a determination of whether cervical adenopathy is present in order to determine their underlying origin.     

A comparison of computed tomography and ultrasound in the assessment of parotid masses

Computed tomography (CT) and ultrasonography were compared in the evaluation of parotid masses. The findings in 18 patients are presented. Both techniques proved equally effective at locating and predicting malignancy in lesions confined to the superficial lobe of the gland. Tumours in the deep lobe, medial to the ramus of the mandible and those extending beyond the confines of the gland were more reliably assessed by CT. It is recommended that CT is reserved for such problems, and that ultrasonography should be the initial investigation for the evaluation of parotid masses.     

Evaluation of the parotid gland. Comparison of sialography, non-contrast computed tomography, and CT sialography

Sialography, non-contrast computed tomography (NCCT), and CT sialography (CTS) were compared in 40 patients with parotid disease. While NCCT and CTS proved to be superior to sialography in most cases, with NCCT being as good as CTS for demonstration of parotid masses, sialography was preferred over both NCCT and CTS for evaluation of inflammatory disease. The role of percutaneous needle aspiration is discussed, and protocols for evaluation of both parotid masses and inflammatory disease are presented.     

腮腺基底细胞腺瘤的CT与MRI表现

目的:探讨腮腺基底细胞腺瘤(BCA)的CT和MRI表现。方法:回顾性分析10例腮腺BCA的CT和MRI表现。10例中男3例,女7例;右侧腮腺4例,左侧6例。结果:10例肿瘤均为单发,肿瘤最长径平均为2.4cm。10例肿瘤中不规则形或深分叶状2例,圆形或类圆形8例;边缘均光滑清楚。MRI检查2例,表现为长T1、短T2信号实性肿块,伴稍低信号包膜,增强扫描后病灶呈均匀明显强化。CT检查8例:6例呈实性,2例呈囊实性、内有大片液化囊变,实性部分明显强化。结论:腮腺BCA的CT和MRI表现有一定特征,结合临床,有助于本病的诊断和鉴别诊断。     

Efficacy of conventional whole-body <Superscript>18</Superscript>F-FDG PET/CT in the incidental findings of parotid masses

Objective  

The objective of this study was to evaluate the incidence of incidental parotid masses with conventional whole-body ¹⁸F-deoxyglucose (FDG) PET/CT and assess the ability of PET/CT to characterize these unexpected parotid lesions.