11 results on '"Gómez Muñoz J"'
Search Results
2. The application possibilities of the gamma-ray Compton backscattering technique
- Author
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Flechas, D., primary, Sarmiento, L. G., additional, González, N., additional, Gómez-Muñoz, J., additional, Garzón, C., additional, Fajardo, E., additional, and Cristancho, F., additional
- Published
- 2013
- Full Text
- View/download PDF
3. Gamma backscattering in soil layers with different thickness and water content
- Author
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Gómez-Muñoz, J., primary, Cortés, M. L., additional, and Cristancho, F., additional
- Published
- 2012
- Full Text
- View/download PDF
4. The application possibilities of the gamma-ray Compton backscattering technique.
- Author
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Flechas, D., Sarmiento, L. G., González, N., Gómez-Muñoz, J., Garzón, C., Fajardo, E., and Cristancho, F.
- Subjects
GAMMA rays ,COMPTON scattering ,BACKSCATTERING ,METALLIC surfaces ,PHYSICS experiments ,MONTE Carlo method - Abstract
The location of objects hidden in dense matter and the analysis of metallic surfaces using gamma backscattering are two possible applications strongly suggested here with experiments, highlevel Monte Carlo simulations, and some supporting basic theory. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
5. Gamma backscattering in soil layers with different thickness and water content.
- Author
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Gómez-Muñoz, J., Cortés, M. L., and Cristancho, F.
- Subjects
- *
GAMMA ray backscattering , *SOIL moisture , *SOIL depth , *RADIOACTIVE source strength , *PHOTONS , *SPECTRUM analysis , *POSITRONS - Abstract
The γ-soil interaction is studied. The experimental set-up uses the positron decay of a radioactive 22Na source and two gamma detectors connected in fast time-coincidences. Spectra of backscattered γ-rays are obtained and an approach to differentiate between single and multiple backscattered photons is presented with wich their relative intensity as a function of layer thickness and water content is analyzed. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
6. Prostatic nephrogenic adenoma. Case report.
- Author
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López Martín L, García Cardoso JV, Martín Vivas C, Gómez Muñoz J, Susaníbar Napurí LF, and González Enguita C
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- Adenoma surgery, Humans, Incidental Findings, Male, Middle Aged, Prostatic Hyperplasia complications, Prostatic Hyperplasia surgery, Prostatic Neoplasms surgery, Transurethral Resection of Prostate, Urethral Neoplasms pathology, Urethral Neoplasms surgery, Urologic Neoplasms surgery, Adenoma pathology, Prostatic Neoplasms pathology, Urologic Neoplasms pathology
- Abstract
Objective: We present a case of prostatic urethra nephrogenic adenoma as an incidental finding following transurethral resection of the prostate., Method/result: It is an incidental diagnosis of nephrogenic adenoma of prostatic urethra in a 50-year-old male operated for benign prostatic hyperplasia by means of transurethral resection., Conclusions: Nephrogenic adenoma is an infrequent and benign lesion of the urinary tract, associated with a previous history of trauma or irritation on the urothelium. Predisposing factors include infections, calculi, surgery, trauma and kidney transplantation.
- Published
- 2011
7. Adrenal myelolipoma. Contribution of a case and bibliographic review.
- Author
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López Martín L, García Cardoso JV, Gómez Muñoz J, and González Enguita C
- Subjects
- Adult, Female, Humans, Adrenal Gland Neoplasms diagnosis, Adrenal Gland Neoplasms surgery, Myelolipoma diagnosis, Myelolipoma surgery
- Abstract
Objective: We report the case of adrenal gland myelolipoma., Methods/results: The patient was a 29 year old who is diagnosed with an adrenal adenoma during an endocrinology review. He underwent laparoscopic adrenalectomy. The pathological study confirmed the diagnosis of adrenal myelolipoma., Conclusions: The myelolipoma is a rare tumor composed of hematopoietic elements in different maturation stages and without histological changes, combined with mature adipose tissue in varying proportions. Most of them are incidental findings during radiologic complementary tests. Treatment should be tailored to each particular case. Surgery is indicated when the mass exceeds the size 4-6 cm or when it is a functioning mass.
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- 2010
8. [Controversies in the prostate surgical anatomy. A literature review].
- Author
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Monzó Gardiner JI, Herranz Amo F, Cabello Benavente R, Bun M, Gómez Muñoz J, and González Enguita C
- Subjects
- Humans, Male, Prostate anatomy & histology, Prostate surgery
- Abstract
Introduction: Radical prostatectomy technique has improved in the last years based on accumulated surgical experience and new anatomical findings. We think it is time to update anatomical concepts to standardized the criteria formentioning structures related with radical prostatectomy, Material and Method: With the followings key words: "cavernosal nerves, prostatectomy, anatomy, neurovascular bundle" we search in Medline/PubMed database selecting papers fulfilling the search criteria., Conclusions: The prostate does not have a true capsule but rather an incomplete fibromuscular band as an intrinsic part of the gland. Periprostatic fascia seems to be a different structure from this fibromuscular band. Histologically Denonvilliers's fascia is formed by two thin layers that cannot be separated during surgery. The longitudinal smooth muscle fibres located beneath the posterior bladder neck corresponds to the posterior longitudinal fascia of the detrusor muscle. Cavernosal nerves are located between the two layers of the endopelvic fascia, the inner layer could be named periprostatic fascia and the outer, levator ani fascia. Cavernosal nerves merged from the pelvic plexus running within a neurovascular bundle around the prostate that could be found as a singular bundle or spread all around the anterolateral surface of this gland. There are overlapping terms to designate the pelvic fascia, therefore it could be useful for Urologists to standardized them.
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- 2009
- Full Text
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9. [Hematuria of papillary or medullar origin: a difficult diagnosis entity].
- Author
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González Enguita C, Gómez Muñoz J, Martín Vivas C, López Martín L, Susanibar Napuri LF, Alexandro S, Caramelo Díaz C, and Vela Navarrete R
- Subjects
- Adult, Aged, Female, Hemangioma complications, Humans, Kidney Neoplasms complications, Hemangioma diagnosis, Hematuria etiology, Kidney Medulla, Kidney Neoplasms diagnosis
- Abstract
Objectives: Renal haemangiomas of renal papillary or medullar origin are a difficult diagnosis entity, being one of the most frequent processes of chronic episodes of hematuria, secondary to benign disease, mainly in young patients. The objective of this paper is to show the difficulty of this diagnosis and the need to suspect it in cases with clinical history similar to the ones described in these cases., Methods: We report 4 cases of spontaneous hematuria of renal origin, with clinical presentation as renal colic, from the historical case series of the Fundacion Jimenez Díaz-Capio, the last two from the years 2005-6. We present the diagnostic and therapeutic methodology employed, including angio-CT and flexible ureterorenoscopy (URS) as well as various treatment options., Results: Hematuria was identified as "essential" when any relation with tumor or lithiasic pathologies was ruled out, and of renal origin when the source was clearly pointed. We interpreted it was related to angiomas or microangiomas of papillary or medullar origin. In one case, the vascular malformation was interpreted as an arterial venous fistula (AVF) at that level. Hematuria stopped spontaneously in two cases after exploratory URS. The eldest historical case required surgical expiration of the caliceal structures., Conclusion: Years ago, following the professional development of Urology as speciality, conventional surgery was carried out in all these cases, of very difficult diagnosis, with a very small number of cases undergoing a conservative approach based on the examination of renal cavities trying to observe and find the bleeding point. Most cases underwent complete or partial nephrectomy. Currently, the possibility of exploration of all renal cavities with the flexible ureterorenoscope enables a better diagnosis of the lesions and a more conservative treatment. The ultimate diagnosis of renal papillary angioma is the pathologic diagnosis, without pathognomonic data in the imaging tests. This pathology is thought of at the end of the diagnostic workup, and when the papillary area is identified as the source of bleeding. The historical case series, with the pathologic findings from nephrectomy specimens, permits us to point out this entity as papillary angioma, in patients with similar clinical presentation.
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- 2008
- Full Text
- View/download PDF
10. [Upper urinary tract video-urodynamics. Current indications].
- Author
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González Enguita C, Vela Navarrete R, Cabrera Pérez J, Bravo Fernández I, Pérez Ortíz G, and Gómez Muñoz J
- Subjects
- Humans, Radiography, Kidney Diseases diagnostic imaging, Kidney Diseases physiopathology, Ureteral Diseases diagnostic imaging, Ureteral Diseases physiopathology, Urodynamics, Video Recording
- Abstract
Objectives: Upper urinary tract videourodynamic studies were first described in the second half of the 20th century (years 60-70). The antegrade pyelogram with constant pressure and controlled flow received the name of its author, "Vela Navarrete test" (1982), who currently refers to it as video-urodynamic study of the upper urinary tract. It is the simultaneous study of pressure, flow, and dynamic x-ray of the upper urinary tract and it keeps same indications than the original design, in spite of the appearance of new dynamic and static imaging techniques (ultrasound, CT scan, MRI, radioisotope studies). The continued practice of video urodynamic study of the upper urinary tract in the FJD prompted an update of the procedure reviewing its current indications., Methods: Patient is positioned in the prone decubitus on an x-ray table with video. After punctioning renal cavities with fine needle, video urodynamic tests are performed: pyelomanometry, basal pyelic pressure (basic urodynamics study), pressure changes after induced diuresis, and pressure-flow studies. 10-20 ml of urine are obtained for biochemical tests (creatinine, electrolytes, osmolarity,...), which give information about the functional viability of the renal unit, cytology or microbiological tests. Finally, the study concludes with an antegrade pyelogram, a fluoroscopic study of the radiological anatomy which provides morphologic and dynamic data of the upper urinary tract. In the Urodynamics Unit of the FJD, urologists perform 30-40 studies per year. We analyzed retrospectively all studies performed over the last five years (1999-2005) for various pathological entities of kidney dilation. (Table I)., Results: Structural and dynamic data obtained by the studies offered conclusive information in most of them facilitating the decision for surgery or observation (Table II)., Conclusions: The interpretation of the upper urinary tract video-urodynamic study is based on radiological and dynamic findings. Flow-controlled pyelogram enables determining the existence of obstruction, dilation volume, and ureteral peristaltic behaviour. Constant pressure enables quantification of obstruction. The video urodynamic study of the upper urinary tract is easy to perform, well tolerated and may be repeated as many times as required, mainly if nephrostomy tube is placed for more prolonged evaluations. It offers excellent anatomical, dynamic, and etiological information about the upper urinary tract, and furthermore conclusive, with minimal risk.
- Published
- 2005
- Full Text
- View/download PDF
11. [Gastric necrosis due to vasculitis in an HIV+ patient].
- Author
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Alcántara Gijón F, Bernal Bellido C, Ceballos García R, and Gómez Muñoz JC
- Subjects
- Adult, Gastrectomy, Humans, Ischemia diagnosis, Ischemia surgery, Male, Necrosis, Polyarteritis Nodosa surgery, Stomach blood supply, Stomach Diseases surgery, HIV Seropositivity complications, HIV-1 immunology, Polyarteritis Nodosa diagnosis, Stomach pathology, Stomach Diseases diagnosis
- Published
- 1999
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