Abstract：
PURPOSE:The purpose of this study was to correlate thin-slice high-resolution helical CT findings of arterial and venous involvement in pancreatic cancers with surgical and histopathologic results. METHOD:Forty-eight patients with pancreatic cancer underwent preoperative thin-slice high-resolution helical CT, followed by surgical dissection of the pancreatic vessels during curative or palliative surgery. Major vessels running within 1 cm from the tumor margin were evaluated. CT appearance was graded on a 0-4 scale (0: none, 1: <24%, 2: 25-49%, 3: 50-74%, 4: 75-100%) by circumferential contiguity of tumor to vessels. Resected specimens were available from 26 patients. RESULTS:Surgical correlation of CT findings was available in 89 veins and 83 arteries, and both surgical and histologic correlation was available for 42 veins and 29 arteries. At surgical observation, 29 of 35 veins (82.9%) evaluated as CT grade 3 or 4 were found to be involved, whereas only 18 of 30 arteries (60%) evaluated as CT grade 3 or 4 were proved to be involved. On microscopic observation, tumor invasion to the portal venous systems was confirmed in 15 of 42 (35.7%) vessels, and this invasion was depicted as from CT grades 1 to 4. In arteries, tumor invasion was seen in 3 of 29 vessels (10.3%), all of which were graded as 3 or 4 by CT. CONCLUSION:The grading system of vascular invasion should differ between arteries and veins. Involvement of the venous system exceeding one-half circumference of the vessels (grade 3 or 4) was suggestive of vascular invasion; however, this criterion was not always satisfactory for the evaluation of tumor invasion in the arterial system.
journal_name
J Comput Assist Tomogrjournal_title
Journal of computer assisted tomographyauthors
Nakayama Y,Yamashita Y,Kadota M,Takahashi M,Kanemitsu K,Hiraoka T,Hirota M,Ogawa M,Takeya Mdoi
10.1097/00004728-200105000-00002keywords:
subject
Has Abstractpub_date
2001-05-01 00:00:00pages
337-42issue
3eissn
0363-8715issn
1532-3145pii
00004728-200105000-00002journal_volume
25pub_type
杂志文章abstract：OBJECTIVE:The objective of this study was to evaluate a prototype, ultrahigh-resolution computed tomography offering higher reconstruction matrix (1024 × 1024) and spatial resolution (0.15 mm) for chest imaging. METHODS:Higher (1024) matrix reconstruction enabled by ultrahigh-resolution computed tomography scanner (12...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0000000000000917
更新日期：2019-09-01 00:00:00
abstract：OBJECTIVE:To determine the frequency and computed tomography (CT) characteristics of ovarian cysts in women of different ages. METHODS:Five hundred ninety-five contrast-enhanced CT studies performed in 430 females aged 10 or older between January 2001 and December 2006 were retrospectively reviewed. For each study, we...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0b013e3181d658a5
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abstract：OBJECTIVE:To compare examination volume and diagnostic yield of computed tomography (CT) pulmonary angiography (CTPA) and ventilation-perfusion (V/Q) scintigraphy for detection of suspected pulmonary embolism (PE) in emergency department patients. METHODS:Every CTPA and V/Q scan result for emergency department patient...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0b013e31812e6af3
更新日期：2008-05-01 00:00:00
abstract：OBJECTIVE:The objective of this study was to assess the feasibility of performing diagnostic-quality contrast-enhanced excretory magnetic resonance urography (eMRU) at 3T, examining both image quality and diagnostic accuracy for a range of urinary tract abnormalities. METHODS:The diuretic-enhanced 3T eMRUs of 37 patie...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0b013e3182711fd9
更新日期：2013-01-01 00:00:00
abstract：OBJECTIVE:The objective of this study was to develop and validate a novel noise insertion method that can accurately simulate lower-dose images from existing standard-dose computed tomography (CT) data. METHODS:The noise insertion method incorporates the effects of the bowtie filter, automatic exposure control, and el...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0b013e318258e891
更新日期：2012-07-01 00:00:00
abstract：:The typical CT findings of Lhermitte-Duclos disease (dysplastic gangliocytoma of the cerebellum) are a hypodense nonenhancing unilateral posterior fossa mass, with or without adjacent occipital thinning, hydrocephalus, and calcification. Magnetic resonance (MR) has been found to be very helpful, and superior to CT, in...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-199011000-00022
更新日期：1990-11-01 00:00:00
abstract：:Magnetic resonance imaging was performed in four patients with biopsy proven idiopathic portal hypertension (IPH). The MR images show proximity of medium-sized intrahepatic vessels to each other and to the liver surface in all patients. Small vessels running parallel to the second order branches of the intrahepatic po...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-199105000-00011
更新日期：1991-05-01 00:00:00
abstract：OBJECTIVE:To evaluate the prevalence and characteristics of myocardial bridging in patients who underwent single- or dual-source multidetector cardiac computed tomographic angiography (MDCTA). METHODS:Retrospective review of the imaging characteristics of 57 myocardial bridges in 53 patients who underwent cardiac MDCT...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0b013e318075e6c3
更新日期：2008-03-01 00:00:00
abstract：OBJECTIVE:To describe the computed tomography (CT) and magnetic resonance imaging (MRI) findings of solid organizing hepatic abscesses and correlate them with the pathologic findings. METHODS:Ten patients with 10 pathologically proven solid organizing hepatic abscesses who underwent 3-phase CT (n = 10) or MRI (n = 7) ...
journal_title：Journal of computer assisted tomography
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doi：10.1097/00004728-200603000-00004
更新日期：2006-03-01 00:00:00
abstract：:Three noninvasive imaging methods, CT, scintigraphy with 201TlCl and 99mTcO4-, and ultrasonography, were performed on 36 patients with chronic renal failure and secondary hyperparathyroidism. The patients subsequently underwent total parathyroidectomy and parathyroid autograft. The detection rates of the three methods...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-198507010-00014
更新日期：1985-07-01 00:00:00
abstract：:Computed tomography (CT) has been performed in 21 patients with primary hyperparathyroidism (HPT) in an attempt to localize preoperatively the parathyroid tumors. Eighteen of these patients also had ultrasound examinations. The CT examinations included the neck and mediastinum and were performed before and after contr...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-198206000-00016
更新日期：1982-06-01 00:00:00
abstract：:We describe a patient with a metastatic liver tumor that showed a cordlike shadow traversing the tumor on CT. Histopathologically, this cordlike shadow within the metastatic liver tumor was proved to be an infiltrated portal vein without blood flow surrounded by fibrous tissue. Vascular structures traversing a focal l...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-199501000-00026
更新日期：1995-01-01 00:00:00
abstract：OBJECTIVE:The aim of the study was to investigate the accuracy of dual-energy computed tomography (DECT) compared with magnetic resonance (MR) imaging for the detection of edema of the mandible. MATERIALS AND METHODS:Fifteen adult Göttingen mini pigs received irradiation to the mandible with an equivalent dose of 0, 2...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0000000000000559
更新日期：2017-07-01 00:00:00
abstract：:Fallopian tube carcinoma is an unusual gynecologic malignancy that is rarely diagnosed preoperatively. We report a case of fallopian tube carcinoma occurring in a patient who had undergone a hysterectomy many years previously, in whom findings on computed tomography and ultrasound were highly suggestive of the diagnos...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章,评审
doi：10.1097/00004728-200305000-00011
更新日期：2003-05-01 00:00:00
abstract：:The presence of superior mesenteric artery aneurysms may be suspected on the basis of clinical and ultrasound findings. These lesions have a suggestive appearance on computed tomography, but for a preoperative assessment angiography is always indicated. Two cases are presented. ...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-198010000-00009
更新日期：1980-10-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to describe the computed tomography (CT) findings and correlate pulmonary function tests (PFTs) of silicosis patients with emphasis on the findings in lung transplantation (LTX) recipients. METHODS:We studied the chest CT scans from 82 marble workers exposed to artificial stone dust...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0000000000000454
更新日期：2016-11-01 00:00:00
abstract：:The transfer of magnetization between a free and a bound pool of spins is described in terms of the respective longitudinal relaxation times and the life times of spins in each pool. The effect of an off resonance radiofrequency (RF) pulse in producing saturation in the bound pool and a consequent decrease in both the...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-199201000-00003
更新日期：1992-01-01 00:00:00
abstract：:The following report describes the computed tomographic (CT) features of oncocytic papillary renal cell carcinoma (OPRCC), a new subtype. An experienced genitourinary pathologist identified each tumor as type 1 or 2, oncocytic, or other. Two radiologists independently reviewed CT images and assessed maximal tumor diam...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0b013e3181d1dde8
更新日期：2010-05-01 00:00:00
abstract：PURPOSE:The purpose of this work was to determine the range of normal measurements for the thyroid gland on chest CT scans and relate it to the dimensions of the trachea. METHOD:Chest CT scans in 118 patients were examined prospectively for visibility of the thyroid gland and its relationship to the trachea. The great...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-200205000-00005
更新日期：2002-05-01 00:00:00
abstract：:Magnetic resonance (MR) imaging and CT were used in supporting the diagnosis of Leigh disease (subacute necrotizing encephalomyelopathy) in five patients. Two cases were confirmed at postmortem examination, and three patients have laboratory and/or clinical histories suggestive of Leigh disease. Four cases demonstrate...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-198801000-00006
更新日期：1988-01-01 00:00:00
abstract：PURPOSE:To retrospectively investigate the effect of the section thickness used for quantifying dual-energy perfusion computed tomography (DEpCT) during 2- and 3-dimensional evaluation. METHODS:Sixty-six patients (22 males and 44 females; mean age, 59.3 years) suspected of having an acute pulmonary embolism underwent ...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0000000000000148
更新日期：2014-11-01 00:00:00
abstract：:The identification of fat within a focal or diffuse mediastinal lesion significantly narrows the differential diagnosis. In many cases, a specific diagnosis can be suggested on the basis of CT findings. In this article, we illustrate and review the characteristic CT features of common and uncommon fat attenuation lesi...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章,评审
doi：10.1097/00004728-200111000-00010
更新日期：2001-11-01 00:00:00
abstract：OBJECTIVE:To prospectively investigate the feasibility of an 80-kilovolt (peak) (kVp) protocol in computed tomographic venography for varicose veins of the lower extremities by comparison with conventional 120-kVp protocol. METHODS:Attenuation values and signal-to-noise ratio of iodine contrast medium (CM) were determ...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0b013e3182621ea9
更新日期：2012-09-01 00:00:00
abstract：OBJECTIVE:The aim of the study was to determine the effects of dose reduction and iterative reconstruction (IR) on pulmonary nodule volumetry. METHODS:In this prospective study, 25 patients scheduled for follow-up of pulmonary nodules were included. Computed tomography acquisitions were acquired at 4 dose levels with ...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0000000000000408
更新日期：2016-07-01 00:00:00
abstract：BACKGROUND:Increasing image pitch in computed tomographic (CT) imaging is a method through which scan time can be reduced, which can reduce motion artifacts. In this study, we assess the clinical feasibility of ultrahigh-pitch CT imaging made possible by dual-source CT. METHODS:Image pitch, total scan time, and image ...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0b013e31821a02c8
更新日期：2011-05-01 00:00:00
abstract：PURPOSE:To compare the volume rendering (VR) and maximum intensity projection (MIP) computed tomography angiography (CTA) techniques using multidetector-row CT for hepatic artery evaluation of potential donors for living donor liver transplantation (LDLT). METHOD:Over a 9-month period, CTA using multidetector-row CT a...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-200303000-00004
更新日期：2003-03-01 00:00:00
abstract：:High-resolution CT (HRCT) and chest radiographs were compared in nine patients with miliary lung disease. In all cases, miliary disease was documented to be infectious in etiology; six of these patients proved to be human immunodeficiency virus (HIV) positive. A mixture of both sharply and poorly defined 1-3 mm nodule...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-199205000-00009
更新日期：1992-05-01 00:00:00
abstract：PURPOSE:An approach for quantifying the shapes of the cerebral sulci is presented, utilizing a probabilistic geometric model, and it is applied to the central sulcus. METHOD:The geometric structure of the central sulcus is determined from a set of outlines on cross-sectional images and is used by a procedure that auto...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/00004728-199811000-00022
更新日期：1998-11-01 00:00:00
abstract：OBJECTIVE:Dysarthria and tongue swelling may be seen with hypoglossal nerve palsy, and on cross-sectional imaging studies, tongue denervation can be misinterpreted as a primary base-of-tongue mass. Understanding radiological patterns of tongue denervation is important to prevent misinterpretation. Close evaluation of t...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0b013e318268ec18
更新日期：2012-11-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to investigate the utility of a balloon rectal channel catheter (BRCC) in complex anal fistula magnetic resonance imaging (MRI). METHODS:A prospective study was done on 54 patients with clinical diagnosis of complex anal fistula. Eighteen patients had preoperative MRI before and aft...
journal_title：Journal of computer assisted tomography
pub_type： 杂志文章
doi：10.1097/RCT.0000000000000400
更新日期：2016-07-01 00:00:00
