Solitary pulmonary nodules: determining the likelihood of malignancy with neural network analysis.


PURPOSE:To test a neural network in differentiation of benign from malignant solitary pulmonary nodules. MATERIALS AND METHODS:Neural networks were trained and tested on the characteristics of 318 nodules. Predictive accuracy of the network was judged for calibration and discrimination. Network results were compared with those with a simpler Bayesian method. RESULTS:The Brier score was 0.142 (calibration, 0.003; discrimination, 0.139) for the neural network and 0.133 for the Bayesian analysis (calibration, 0.012; discrimination, 0.121). Analysis of the calibration curve revealed no significant difference (P < .05) between the slope (b = 1.09) and the line of identity (b = 1) for the neural network or the Bayesian analysis. The area under the receiver operating characteristic curve was 0.871 for the neural network and 0.894 for the Bayesian analysis (P < .05). There were 23 and 21 false-positive predictions and 18 and six false-negative predictions for the neural network and Bayesian analysis, respectively. CONCLUSION:The Bayesian method was better than the neural network in prediction of probability of malignancy in solitary pulmonary nodules.






Gurney JW,Swensen SJ




Has Abstract


1995-09-01 00:00:00












  • Comparison of CT, low-field-strength MR imaging, and high-field-strength MR imaging. Work in progress.

    abstract::To assess objectively the sensitivity and specificity of low-field-strength (0.064 T) magnetic resonance (MR) imaging, a prospective blind study of 280 examinations was performed to compare low-field-strength MR imaging with computed tomography (CT) and with high-field-strength (1.5-T) MR imaging of the cranium. The s...


    pub_type: 杂志文章


    authors: Orrison WW Jr,Stimac GK,Stevens EA,LaMasters DL,Espinosa MC,Cobb L,Mettler FA Jr

    更新日期:1991-10-01 00:00:00

  • Hepatic helical CT: effect of reduction of iodine dose of intravenous contrast material on hepatic contrast enhancement.

    abstract:PURPOSE:To evaluate the effect of a reduction in iodine dose by altering volume and/or concentration of contrast material on hepatic contrast enhancement (HCE) values during hepatic helical computed tomography (CT). MATERIALS AND METHODS:One hundred eleven patients were randomized into four contrast material protocols...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Freeny PC,Gardner JC,vonIngersleben G,Heyano S,Nghiem HV,Winter TC

    更新日期:1995-10-01 00:00:00

  • Percutaneous insertion of the Kimray-Greenfield filter: technical considerations and problems.

    abstract::Kimray-Greenfield filters were inserted percutaneously into the inferior vena cava (IVC) in 57 patients. Thirty-six were placed from the right femoral vein, 14 from the left femoral vein, and seven from the right internal jugular vein. There were no deaths or major complications and only six minor complications. Infer...


    pub_type: 杂志文章


    authors: Pais SO,Mirvis SE,De Orchis DF

    更新日期:1987-11-01 00:00:00

  • Capsular transgression of prostatic carcinoma: evaluation with transrectal US with pathologic correlation.

    abstract::One hundred twenty-five patients with biopsy proved clinical stage A or B prostatic carcinoma were evaluated with biplane transrectal ultrasonography (US) prior to radical prostatectomy. Sonograms were evaluated for capsular transgression of the tumor into the posterior and posterolateral aspects of the glands as mani...


    pub_type: 临床试验,杂志文章


    authors: Hamper UM,Sheth S,Walsh PC,Holtz PM,Epstein JI

    更新日期:1991-03-01 00:00:00

  • Complementary role of Tc-99m-diethyl-IDA and ultrasound in large and small duct biliary tract obstruction.

    abstract::Fifty-one patients underwent both radionuclide and ultrasound studies of the hepatobiliary system. Eleven patients had large bile duct obstruction, six had intrahepatic diffuse small duct obstruction, and 37 had no obstruction. In all 11 patients with large duct obstruction, the radionuclide images were abnormal, but ...


    pub_type: 杂志文章


    authors: Klingensmith WC 3rd,Johnson ML,Kuni CC,Dunne MG,Fritzberg AR

    更新日期:1981-01-01 00:00:00

  • Intracerebral hemorrhage secondary to cerebral amyloid angiopathy.

    abstract::Cerebral amyloid angiopathy (CAA) is a cause of intracerebral hemorrhage in a significant proportion of normotensive patients. Two cases of pathologically proved multiple intracerebral hemorrhages due to CAA are reported. These hemorrhages are accurately demonstrated on computed tomography and are typically superficia...


    pub_type: 杂志文章


    authors: Patel DV,Hier DB,Thomas CM,Hemmati M

    更新日期:1984-05-01 00:00:00

  • Normal spinal bone marrow in adults: dynamic gadolinium-enhanced MR imaging.

    abstract:PURPOSE:To determine the patterns of dynamic enhancement of normal spinal bone marrow in adults at gadolinium-enhanced magnetic resonance (MR) imaging and the changes that occur with aging. MATERIALS AND METHODS:Dynamic contrast material-enhanced MR imaging of the thoracolumbar spine was performed in 71 patients. The ...


    pub_type: 杂志文章


    authors: Montazel JL,Divine M,Lepage E,Kobeiter H,Breil S,Rahmouni A

    更新日期:2003-12-01 00:00:00

  • Acute liver rejection: accuracy and predictive values of doppler US measurements--initial experience.

    abstract:PURPOSE:To prospectively evaluate accuracy and predictive values of Doppler ultrasonographic (US) measurement of portal blood velocity (PBV) and splenic pulsatility index (SPI) in diagnosis of clinically relevant acute rejection in patients with clinicobiochemical hepatic dysfunction after orthotopic liver transplantat...


    pub_type: 杂志文章


    authors: Bolognesi M,Sacerdoti D,Mescoli C,Nava V,Bombonato G,Merkel C,Merenda R,Angeli P,Rugge M,Gatta A

    更新日期:2005-05-01 00:00:00

  • Temporomandibular joint clicking with nonreducing anterior displacement of the meniscus.

    abstract::Patients who have temporomandibular joint (TMJ) clicking and pain are assumed to have an anterior displacement of the meniscus with reduction on opening of the jaw. On the basis of this assumption, these patients are treated nonsurgically with splint therapy. Of 301 TMJs examined, 108 (36%) produced clinically audible...


    pub_type: 杂志文章


    authors: Miller TL,Katzberg RW,Tallents RH,Bessette RW,Hayakawa K

    更新日期:1985-01-01 00:00:00

  • Circumferential Thick Enhancement at Vessel Wall MRI Has High Specificity for Intracranial Aneurysm Instability.

    abstract::Purpose To identify wall enhancement patterns on vessel wall MRI that discriminate between stable and unstable unruptured intracranial aneurysm (UIA). Materials and Methods Patients were included from November 2012 through January 2016. Vessel wall MR images were acquired at 3 T in patients with stable (incidental and...


    pub_type: 杂志文章


    authors: Edjlali M,Guédon A,Ben Hassen W,Boulouis G,Benzakoun J,Rodriguez-Régent C,Trystram D,Nataf F,Meder JF,Turski P,Oppenheim C,Naggara O

    更新日期:2018-10-01 00:00:00

  • Progressive multifocal leukoencephalopathy.

    abstract::The radionuclide, radiographic and pathologic findings in a patient with progressive multifocal leukoencephalopathy were correlated. Radionuclide imaging demonstrated the largest two of the many lesions observed at pathology. On repeated studies, one of the lesions developed a "doughnut" sign due to central necrosis. ...


    pub_type: 杂志文章


    authors: Kirsh J,Rosenthall L,Finlayson MH,Wee R

    更新日期:1976-05-01 00:00:00

  • In situ saphenous vein bypass grafts: angiographic evaluation and interventional repair of complications.

    abstract::In situ saphenous vein grafts are being used with increasing frequency for bypass procedures involving the femoral and popliteal arteries. Complications of these procedures include anastomotic stenoses and persistent arteriovenous fistulae that may result in failure of the graft. Balloon angioplasty and embolotherapy ...


    pub_type: 杂志文章


    authors: Kinnison ML,Perler BA,Kaufman SL,Mitchell SE,Kadir S,Williams GM,White RI Jr

    更新日期:1986-09-01 00:00:00

  • Is There an Association between STARD Statement Adherence and Citation Rate?

    abstract::Purpose To determine if adherence to the Standards for Reporting of Diagnostic Accuracy (STARD) is associated with postpublication citation rates. Materials and Methods A comprehensive search of PubMed, EMBASE, and Cochrane Library databases was performed to identify published articles that have evaluated adherence of...


    pub_type: 杂志文章


    authors: Dilauro M,McInnes MD,Korevaar DA,van der Pol CB,Petrcich W,Walther S,Quon J,Kurowecki D,Bossuyt PM

    更新日期:2016-07-01 00:00:00

  • Cavernous hemangiomas of the spinal cord: MR imaging.

    abstract::In three patients with histologically proved cavernous hemangiomas of the spinal cord, magnetic resonance (MR) imaging was superior to myelography, delayed computed tomography (CT) myelography, and contrast-enhanced CT in depicting the lesion. The presence of mixed subacute and chronic hemorrhage, suggested by mixed h...


    pub_type: 杂志文章


    authors: Fontaine S,Melanson D,Cosgrove R,Bertrand G

    更新日期:1988-03-01 00:00:00

  • Diagnosis of nonopaque calculi by computed tomography.

    abstract::Computed tomography can aid in the distinction of calculi from both tumors and clots in the urinary tract. Its availability, simplicity of interpretation, and noninvasiveness establish it as an important diagnostic modality in selected cases when calculus is in the differential diagnosis of upper urinary tract filling...


    pub_type: 杂志文章


    authors: Segal AJ,Spataro RF,Linke CA,Frank IN,Rabinowitz R

    更新日期:1978-11-01 00:00:00

  • Duplication of the müllerian ducts and genitourinary malformations. Part II: analysis of malformations.

    abstract::Forty-seven females with duplication of the uterus and cervix were retrospectively studied to obtain a better understanding of the reasons for failure of fusion of the müllerian ducts by analyzing the associated genitourinary malformations. Thirty-one of the 47 patients had major genitourinary malformations that corre...


    pub_type: 杂志文章


    authors: Gilsanz V,Cleveland RH,Reid BS

    更新日期:1982-09-01 00:00:00

  • Releif of severe fecal impactions with water-soluble contrast enemas.

    abstract::High fecal impaction resulted in complete bowel obstruction in 2 children following renal transplantation and in one adult on chemotherapy and narcotics. The usual methods of relief failed, and water-soluble contrast enemas with a high osmolality were employed. Fluoroscopic control assured placement of the enema fluid...


    pub_type: 杂志文章


    authors: Culp WC

    更新日期:1975-04-01 00:00:00

  • Small hepatocellular carcinoma in patients undergoing liver transplantation: detection with CT after injection of iodized oil.

    abstract:PURPOSE:To assess computed tomography (CT) with iodized oil for depiction of small hepatocellular carcinoma (HCC) before liver transplantation. MATERIALS AND METHODS:Thirty-five consecutive cirrhotic patients underwent CT with iodized oil to determine the presence, number, size, and location of possible nodules. All p...


    pub_type: 杂志文章


    authors: Taourel PG,Pageaux GP,Coste V,Fabre JM,Pradel JA,Ramos J,Larrey D,Domergue J,Michel H,Bruel JM

    更新日期:1995-11-01 00:00:00

  • Cryptosporidiosis of the gastric antrum: detection using CT.

    abstract::We describe a patient who had cryptosporidiosis and cytomegalovirus infection of the gastric antrum that was initially detected on computed tomography (CT) scans. CT may be useful in the evaluation of immunocompromised patients with diarrheal illness, as well as in the assessment of the gastrointestinal tract. ...


    pub_type: 杂志文章


    authors: Soulen MC,Fishman EK,Scatarige JC,Hutchins D,Zerhouni EA

    更新日期:1986-06-01 00:00:00

  • Adrenal cortex dysfunction: CT findings.

    abstract::The computed tomographic appearance of the adrenal gland was studied in 302 patients with possible endocrinologic disease and 107 patients undergoing CT for nonendocrinologic reasons. Measurements of adrenal size were also made in 100 adults with no known adrenal pathology. CT proved to be a sensitive diagnostic tool ...


    pub_type: 杂志文章


    authors: Huebener KH,Treugut H

    更新日期:1984-01-01 00:00:00

  • Hangman's fracture: radiologic assessment in 27 cases.

    abstract::Traumatic spondylolisthesis of C-2, frequently referred to as the hangman's fracture, is typically regarded as a hyperextension injury with rare neurologic sequelae by virtue of decompression of the neural canal. The authors retrospectively evaluated their radiographic experience with this injury in 27 patients over a...


    pub_type: 杂志文章


    authors: Mirvis SE,Young JW,Lim C,Greenberg J

    更新日期:1987-06-01 00:00:00

  • Ioglucomide: a new nonionic myelographic agent. Preclinical studies.

    abstract::Ioglucomide, a new iodinated nonionic contrast medium directed primarily toward myelographic use, was subjected to an extensive toxicological examination in animals. In the majority of studies, ioglucomide was compared directly with metrizamide. In some respects, including freedom from production of arachnoiditis, iog...


    pub_type: 杂志文章


    authors: Hopkins RM,Adams MD,Lau DH,Creighton JM,Hoey GB

    更新日期:1981-09-01 00:00:00

  • Complications of intravenous DSA performed for carotid artery disease: a prospective study.

    abstract::One hundred and two patients, who were being evaluated for carotid artery disease, were prospectively studied for complications occurring as a result of intravenous digital subtraction angiography (DSA). We recorded the type, number, and outcome of complications and reviewed the amount of contrast material used, along...


    pub_type: 杂志文章


    authors: Aaron JO,Hesselink JR,Oot R,Jones RL,Davis KR,Taveras JM

    更新日期:1984-12-01 00:00:00

  • Fetal and funicular vascular anomalies: identification with prenatal US.

    abstract::Vascular anomalies of the umbilical cord and fetus were evaluated with ultrasound in 11 fetuses. The anomalies included true knot of the cord (n = 1), umbilical vein varix (n = 1), persistent right umbilical vein (n = 1), and unilateral hypertrophy of the iliac artery in cases of a single umbilical artery (n = 8). One...


    pub_type: 杂志文章


    authors: Jeanty P

    更新日期:1989-11-01 00:00:00

  • Intraluminal bypass of abdominal aortic aneurysm: feasibility study.

    abstract::This study evaluated the feasibility of treatment of abdominal aortic aneurysm (AAA) by means of intraluminal bypass. Artificial aortic aneurysms with fusiform Dacron conduits were created at surgery , a weft-knit Dacron tube with balloon-expandable stents attached at both ends was inserted transfemorally through a 14...


    pub_type: 杂志文章


    authors: Laborde JC,Parodi JC,Clem MF,Tio FO,Barone HD,Rivera FJ,Encarnacion CE,Palmaz JC

    更新日期:1992-07-01 00:00:00

  • Delivery of systemic chemotherapeutic agent to tumors by using focused ultrasound: study in a murine model.

    abstract:PURPOSE:To quantitatively determine the delivery of systemic liposomal doxorubicin to tumors treated with pulsed high-intensity focused ultrasound and to study the mechanism underlying this delivery in a murine model. MATERIALS AND METHODS:All animal work was performed in compliance with guidelines and approval of ins...


    pub_type: 杂志文章


    authors: Yuh EL,Shulman SG,Mehta SA,Xie J,Chen L,Frenkel V,Bednarski MD,Li KC

    更新日期:2005-02-01 00:00:00

  • Radiologic features of inferior pulmonary ligament air collections in neonates with respiratory distress.

    abstract::Radiologically characteristic extra-alveolar air collections in one or both inferior pulmonary ligaments developed in 14 neonates with respiratory distress on assisted ventilation. Eleven infants had radiographically visible pulmonary interstitial emphysema prior to or concurrent with the air collections. All infants ...


    pub_type: 杂志文章


    authors: Volberg FM Jr,Everett CJ,Brill PW

    更新日期:1979-02-01 00:00:00

  • Evaluation of the Patient Request Process for Radiology Imaging in U.S. Hospitals.

    abstract::Background In the United States, patients have the right to access their protected health information. However, to the knowledge of the authors, no study has evaluated the patient request process and the barriers to patient access of their radiology images. Purpose To assess U.S. hospital compliance with federal regul...


    pub_type: 杂志文章


    authors: Lye CT,Krumholz HM,Eckroate JE,Daniel JG,deBronkart D,Mann MK,Hsiao AL,Forman HP

    更新日期:2019-08-01 00:00:00

  • Improvement in mammography interpretation skills in a community radiology practice after dedicated teaching courses: 2-year medical audit of 38,633 cases.

    abstract::The authors conducted a complete audit of results of 38,633 mammographic examinations performed by 12 general radiologists during a 2-year period with a computerized reporting system. During this period, 11 group members attended 17 dedicated mammography courses. Audit results were analyzed for each radiologist and th...


    pub_type: 杂志文章


    authors: Linver MN,Paster SB,Rosenberg RD,Key CR,Stidley CA,King WV

    更新日期:1992-07-01 00:00:00

  • Choledochal cysts: roentgenographic techniques.

    abstract::Twenty-four cases of choledochal cysts were reviewed. Only 7 cases were definitely diagnosed preoperatively: 3 by 131I rose bengal scanning, 2 by intravenous cholangiography, 1 by oral cholecystography, and 1 by 99mTc sulfur colloid scanning followed by angiography. The highest percentage of definitive positive examin...


    pub_type: 杂志文章


    authors: Rosenfield N,Griscom NT

    更新日期:1975-01-01 00:00:00