Gallstone lithotripsy: relevant physical principles and technical issues.

abstract：PURPOSE:To assess the effectiveness of definitive radiation therapy in patients with superficial esophageal cancer. MATERIALS AND METHODS:Method of irradiation, local control rate, survival rate, and complications were assessed in 105 patients (89 men, 16 women; age range, 50-88 years) with superficial esophageal canc...

journal_title：Radiology

authors： Okawa T,Tanaka M,Kita-Okawa M,Nishio M,Kikuchi Y,Shirato H,Yamada S,Asakawa H,Niibe H,Dokiya T

更新日期：1995-07-01 00:00:00

abstract：:To determine the prevalence of "nonobstructive" (impairment of gas transfer) emphysema in a select population of smokers with dyspnea, a retrospective study of patients with emphysema evident at high-resolution computed tomography (HRCT) was undertaken. Four hundred seventy HRCT studies were reviewed. In 47 cases, cen...

journal_title：Radiology

authors： Klein JS,Gamsu G,Webb WR,Golden JA,Müller NL

更新日期：1992-03-01 00:00:00

abstract：PURPOSE:To determine diagnostic accuracy of four-channel multi-detector row computed tomography (CT) in emergency room and inpatient populations suspected of having acute pulmonary embolism (PE) who prospectively underwent both CT and pulmonary arteriography (PA). MATERIALS AND METHODS:Patients referred for PA to asse...

journal_title：Radiology

authors： Winer-Muram HT,Rydberg J,Johnson MS,Tarver RD,Williams MD,Shah H,Namyslowski J,Conces D,Jennings SG,Ying J,Trerotola SO,Kopecky KK

更新日期：2004-12-01 00:00:00

abstract：:Purpose To develop multiparametric magnetic resonance (MR) imaging models to generate a quantitative, user-independent, voxel-wise composite biomarker score (CBS) for detection of prostate cancer by using coregistered correlative histopathologic results, and to compare performance of CBS-based detection with that of s...

journal_title：Radiology

authors： Metzger GJ,Kalavagunta C,Spilseth B,Bolan PJ,Li X,Hutter D,Nam JW,Johnson AD,Henriksen JC,Moench L,Konety B,Warlick CA,Schmechel SC,Koopmeiners JS

更新日期：2016-06-01 00:00:00

abstract：:The relationship between patient waiting time and capacity and utilization is quantified. By deciding upon the average acceptable and maximum allowable waiting times, the required capacity and resulting utilization rate are fixed. The data needed for analysis include waiting time, patient volume, time required for spe...

journal_title：Radiology

authors： Rhea JT,St Germain RP

更新日期：1979-03-01 00:00:00

abstract：:Gadolinium-labeled diethylenetriaminepentaacetic acid was used as a contrast agent for stereotactic magnetic resonance (MR) imaging in six selected patients with brain tumors who underwent stereotactic biopsy. Regions of contrast enhancement demonstrated by computed tomography (CT) and MR imaging in four of the six pa...

journal_title：Radiology

authors： Earnest F 4th,Kelly PJ,Scheithauer BW,Kall BA,Cascino TL,Ehman RL,Forbes GS,Axley PL

更新日期：1988-03-01 00:00:00

abstract：:A 2-year-old girl with cyanotic congenital heart disease needed to undergo gastrostomy. To avoid the use of general anesthesia, a percutaneous gastrostomy was performed as an interventional radiologic procedure with the patient under sedation and with the use of local anesthesia. The placement of a nasogastrocutaneous...

journal_title：Radiology

authors： Keller MS,Lai S,Wagner DK

更新日期：1986-07-01 00:00:00

abstract：PURPOSE:To investigate the utility of diffusion-weighted (DW) imaging in distinguishing bland thrombus from neoplastic thrombus in the portal vein in patients with hepatocellular carcinoma (HCC). MATERIALS AND METHODS:In this retrospective institutional review board-approved HIPAA-complaint study, the imaging results ...

journal_title：Radiology

authors： Catalano OA,Choy G,Zhu A,Hahn PF,Sahani DV

更新日期：2010-01-01 00:00:00

abstract：:Percutaneous transluminal renal angioplasty has been shown to be an effective technique to dilate renal artery lesions, particularly those due to fibromuscular dysplasia. However, four of 70 patients in this study experienced atypical responses to angioplasty. Their lesions initially resisted dilation and had incomple...

journal_title：Radiology

authors： Srur MF,Sos TA,Saddekni S,Cohn DJ,Rozenblit G,Wetter EB

更新日期：1985-12-01 00:00:00

abstract：:Pelvic sonograms from 61 consecutive patients with suspected ectopic pregnancy and an additional 17 proved ectopic pregnancy cases were reviewed retrospectively. Special attention was given to the appearance of the uterus and intrauterine fluid collections in the absence of a fetal pole. Criteria for the exclusion of ...

journal_title：Radiology

authors： Bradley WG,Fiske CE,Filly RA

更新日期：1982-04-01 00:00:00

abstract：:Previous reports of angiomyolipoma have emphasized the ultrasonic finding of a very echogenic intrarenal mass. Ten cases of angiomyolipoma for which ultrasound examinations were available were retrospectively reviewed and correlated with their pathologic findings, and, when available, with computed tomographic finding...

journal_title：Radiology

authors： Hartman DS,Goldman SM,Friedman AC,Davis CJ Jr,Madewell JE,Sherman JL

更新日期：1981-05-01 00:00:00

abstract：:Radiographs and CT images taken during oral cholecystography in dogs were interpreted in an independent, blind fashion by three radiologists on two occasions and visual assessment of gallbladder density compared to the actual CT values. While there was significant intra- and inter-observer variation, the mean scores f...

journal_title：Radiology

authors： Fon GT,Hunter TB,Berk RN,Patton DD,Capp MP

更新日期：1982-07-01 00:00:00

abstract：PURPOSE:To determine the usefulness of endorectal ultrasonography (US) in staging rectal cancer discovered at polypectomy. MATERIALS AND METHODS:Before surgical resection, endorectal US was performed in 18 consecutive patients with adenocarcinoma discovered in polypectomy specimens. A rotating 7-10-MHz endoprobe with ...

journal_title：Radiology

authors： Kruskal JB,Sentovich SM,Kane RA

更新日期：1999-04-01 00:00:00

abstract：PURPOSE:To evaluate localization of hepatic metastases with the intraarterial secretin injection test in Zollinger-Ellison syndrome (ZES). MATERIALS AND METHODS:Results in 74 patients with ZES (aged 15-70 years) were retrospectively studied. All patients had undergone computed tomography (CT), magnetic resonance (MR) ...

journal_title：Radiology

authors： Gibril F,Doppman JL,Chang R,Weber HC,Termanini B,Jensen RT

更新日期：1996-01-01 00:00:00

abstract：:To improve the efficiency of magnetic resonance imaging of the total spine, the authors developed a coil holder and marker system to accurately localize the level of the spine imaged. The patient's external auditory canal and the alignment light on the imager are lined up with marks on the coil holder. The spine is th...

journal_title：Radiology

authors： Abrahams JJ,Lange RC

更新日期：1989-09-01 00:00:00

abstract：PURPOSE:To determine the prevalence of clinically serious findings unrelated to stroke on cranial magnetic resonance (MR) images in a population of community-dwelling elderly people. MATERIALS AND METHODS:Neuroradiologists reviewed MR images of 3,672 people aged 65 years and older who were enrolled in a longitudinal, ...

journal_title：Radiology

authors： Yue NC,Longstreth WT Jr,Elster AD,Jungreis CA,O'Leary DH,Poirier VC

更新日期：1997-01-01 00:00:00

abstract：:Forty-two hypertensive patients with fibromuscular dysplasia who had angiographic evidence of the development of new disease or of the progression of existing disease were studied. Renal arterial disease was classified as medial fibroplasia with aneurysms (12 patients), subadventitial fibroplasia (24 patients), or int...

journal_title：Radiology

authors： Goncharenko V,Gerlock AJ Jr,Shaff MI,Hollifield JW

更新日期：1981-04-01 00:00:00

abstract：:Involvement of the terminal ileum in cases of cecal carcinoma usually results from direct extension through the cecal wall and ileocecal valve. Extensive lymphatic metastasis from cecal carcinoma can result in deranged lymphatic flow and apparently cause metastatic involvement of the ileum and its mesentery in the abs...

journal_title：Radiology

authors： Moffat RE,Gourley WK

更新日期：1980-04-01 00:00:00

abstract：PURPOSE:To determine if wrist arthrography changes surgeons' diagnoses and treatment plans for patients with chronic wrist pain. MATERIALS AND METHODS:Bilateral, three-compartment wrist arthrography was performed in 64 patients. Prospective questionnaires evaluated surgeons' diagnoses and management plans at three sta...

journal_title：Radiology

authors： Yin Y,Evanoff BA,Gilula LA,Littenberg B,Pilgram TK,Kanterman RY

更新日期：1996-09-01 00:00:00

abstract：PURPOSE:To analyze the results of round 1 of the population-based Valencia Breast Cancer Screening Program. MATERIALS AND METHODS:In this program, 78,224 (72.98%) of the 107,178 women invited (aged 45-65 years) underwent screening. Complementary views were obtained in 5,771 women (7.38%). Among the total population st...

journal_title：Radiology

authors： Vizcaíno I,Salas D,Vilar JS,Ruiz-Perales F,Herranz C,Ibáñez J

更新日期：1998-01-01 00:00:00

abstract：:The techniques and results of percutaneous transluminal angioplasty (TPA) of the renal arteries were evaluated in 20 hypertensive patients with 25 renal artery stenoses. Follow-up angiograms have been obtained in nine patients. Many patients had evidence of both essential and angiotensinogenic hypertension. Eleven pat...

journal_title：Radiology

authors： Tegtmeyer CJ,Dyer R,Teates CD,Ayers CR,Carey RM,Wellons HA Jr,Stanton LW

更新日期：1980-06-01 00:00:00

abstract：:Complications of indwelling ureteral stents were managed percutaneously in 13 patients. These complications consisted of three fractured, three heavily encrusted, and seven migrated stents. While most ureteral stent malfunctions are routinely managed with retrograde techniques, the percutaneous approach allows effecti...

journal_title：Radiology

authors： LeRoy AJ,Williams HJ Jr,Segura JW,Patterson DE,Benson RC Jr

更新日期：1986-01-01 00:00:00

abstract：PURPOSE:To evaluate the usefulness of T2-weighted fast spin-echo magnetic resonance (MR) imaging with a 512 x 256 matrix for assessment of the preoperative stage of endometrial carcinoma. MATERIALS AND METHODS:Twenty-eight women with histopathologically proved endometrial carcinoma underwent preoperative T2-weighted f...

journal_title：Radiology

authors： Takahashi S,Murakami T,Narumi Y,Kurachi H,Tsuda K,Kim T,Enomoto T,Tomoda K,Miyake A,Murata Y,Nakamura H

更新日期：1998-02-01 00:00:00

abstract：PURPOSE:To prospectively compare the reproducibility of normal liver apparent diffusion coefficient (ADC) measurements by using different respiratory motion compensation techniques with multiple breath-hold (MBH), free-breathing (FB), respiratory-triggered (RT), and navigator-triggered (NT) diffusion-weighted (DW) imag...

journal_title：Radiology

authors： Chen X,Qin L,Pan D,Huang Y,Yan L,Wang G,Liu Y,Liang C,Liu Z

更新日期：2014-04-01 00:00:00

abstract：:The most serious and frequent complication of intracranial arteriovenous malformations (AVMs) is intracranial hemorrhage. Identification of patients at greatest risk for intracranial bleeding would be beneficial. Detailed analysis of vascular architecture was performed in 65 patients with intracranial AVMs to identify...

journal_title：Radiology

authors： Marks MP,Lane B,Steinberg GK,Chang PJ

更新日期：1990-09-01 00:00:00

abstract：PURPOSE:To describe the placement of a nasolacrimal polyurethane stent with a new introducer set and hook. MATERIALS AND METHODS:The authors designed a soft polyurethane stent, an introducer that does not require balloon dilation, and a hook that can remove a ball-tipped guide wire from the inferior nasal meatus under...

journal_title：Radiology

authors： Song HY,Jin YH,Kim JH,Huh SJ,Kim YH,Kim TH,Sung KB

更新日期：1995-01-01 00:00:00

abstract：:The posterior wall of the bronchus intermedius (PWBI) is outlined on most lateral chest radiographs by air in the lumen and in adjacent lung. In a prospective review over a 19-month interval, the authors found 36 patients whose PWBI was thick, defined as thickness greater than the normal upper limit of 3.0 mm (33 pati...

journal_title：Radiology

authors： Schnur MJ,Winkler B,Austin JH

更新日期：1981-06-01 00:00:00

abstract：PURPOSE:To characterize the radiographic features of ventilator-associated Pseudomonas aeruginosa pneumonia (PAP). MATERIALS AND METHODS:In 56 patients (40 men and 16 women), PAP was documented with fiberoptic bronchoscopy. All patients underwent mechanical ventilation for at least 48 hours before diagnosis. The findi...

journal_title：Radiology

authors： Winer-Muram HT,Jennings SG,Wunderink RG,Jones CB,Leeper KV Jr

更新日期：1995-04-01 00:00:00

abstract：:Lumbar spinal fusion is a commonly performed procedure, and, despite changes in cage types and fixation hardware, radiologists have, over the years, become familiar with the imaging features of typical spinal fusion and many of the complications seen in patients after surgery, including pseudoarthrosis, hardware loose...

journal_title：Radiology

authors： Murtagh RD,Quencer RM,Castellvi AE,Yue JJ

更新日期：2011-08-01 00:00:00

abstract：PURPOSE:To study the vascular and biliary liver anatomy and its relevance to the creation of a transjugular intrahepatic portosystemic shunt (TIPS). MATERIALS AND METHODS:Acrylic casts of 25 normal human livers (necropsy specimens) were obtained. The anatomy of the hepatic veins, portal vein, hepatic artery, and bile ...

journal_title：Radiology

authors： Uflacker R,Reichert P,D'Albuquerque LC,de Oliveira e Silva A

更新日期：1994-06-01 00:00:00