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British Medical Journal May 1896
PubMed: 20756255
DOI: 10.1136/bmj.1.1848.1318 -
Annals of Surgery Feb 1937
A CORRELATION OF ROENTGEN RAY DOSAGE AND NECROPSY FINDINGS IN A CASE OF RETROPERITONEAL AND MEDIASTINAL METASTASES FROM EMBRYONAL CARCINOMA OF THE TESTIS: DEATH FROM GANGRENE OF THE COLON, THE RESULT OF IRRADIATION THERAPY.
PubMed: 17856925
DOI: 10.1097/00000658-193702000-00013 -
Texas Medical Journal (Austin, Tex.) Apr 1919
PubMed: 36957749
DOI: No ID Found -
British Medical Journal Nov 1896
PubMed: 20756568
DOI: 10.1136/bmj.2.1871.1377-a -
Annals of Surgery Oct 1953
Topics: Carcinoma; Cardia; Esophageal Neoplasms; Humans; Radiotherapy; Stomach Neoplasms; X-Rays
PubMed: 13092793
DOI: 10.1097/00000658-195310000-00016 -
European Spine Journal : Official... Jun 2006Two methods to measure sagittal plane segmental motion in the cervical spine are compared. Translational and rotational motion was measured in nine cervical motion... (Comparative Study)
Comparative Study
Two methods to measure sagittal plane segmental motion in the cervical spine are compared. Translational and rotational motion was measured in nine cervical motion segments of nine patients by distortion-compensated (DCRA) as well as by stereophotogrammetric Roentgen analysis (RSA). To compare measurement precision of the new DCRA protocol with the established RSA technique under realistic clinical conditions and to discuss advantages and disadvantages of both methods in clinical studies. RSA constitutes the most precise method available to assess segmental motion or to monitor fusion in the cervical spine. Due to the invasive nature of the procedure there is an interest in alternative, non-invasive protocols, based on conventional, lateral radiographic views. In nine patients, segmental motion of nine cervical segments with spinal surgery and fusion had previously been assessed from stereo views by RSA. From the archive radiographs, sagittal plane segmental motion was re-assessed by DCRA. Results for sagittal plane translational and rotational motion obtained by both methods are compared. With respect to RSA, sagittal plane rotation was determined by DCRA with an error of 2.4 degrees and a mean difference not significantly different from zero. Sagittal plane translation was determined by DCRA with an error of less than 0.78 mm and a mean difference not significantly different from zero. As two methods are compared, these errors represent the combined (propagated) errors of RSA and DCRA. Averaged over the cohort investigated, measurement of sagittal plane segmental motion exhibited no significant difference between DCRA and RSA.
Topics: Cervical Vertebrae; Cohort Studies; Humans; Movement; Photogrammetry; Radiography; Rotation; Spinal Diseases; Spinal Fusion
PubMed: 16163513
DOI: 10.1007/s00586-005-0929-z -
The American Journal of Pathology 1951
Topics: Antibodies; Antigens; Humans; Radiation Tolerance; X-Rays
PubMed: 14846921
DOI: No ID Found -
The Journal of Arthroplasty Mar 2016Many exchangeable neck hip systems have been withdrawn because of fretting corrosion at the neck/stem coupling. (Observational Study)
Observational Study Randomized Controlled Trial
BACKGROUND
Many exchangeable neck hip systems have been withdrawn because of fretting corrosion at the neck/stem coupling.
METHOD
Our prospective randomized study evaluating stem stability (Roentgen stereophotogrammetric analysis, dual-energy x-ray absorptiometry) and clinical outcomes between the K2/Apex hip systems was ceased early because of a withdrawal of the stems which had an unfavorably high early revision rate reported in the Australian Orthopaedic Association National Joint Registry (9.3% at 3 years).
RESULTS
At 2 years, there are no clinical differences between the stems. Roentgen stereophotogrammetric analysis has identified a high proportion of potentially concerning subsidence and retroversion in both groups, more marked in the K2 stem, although mostly in asymptomatic patients. Dual-energy x-ray absorptiometry has shown similar bone density around the stems. Retrieval analysis of 3 study patients showed fretting corrosion of the antirotation pin and aseptic lymphocyte-dominated vasculitis-associated lesion, with no relationship to bearing type or size. Analysis of 7 further nonstudy K2/Apex stems confirmed similar corrosion.
CONCLUSION
This study shows potentially concerning subsidence of both stems and is the first to describe corrosion at the neck-stem interface and a relationship to metal-related pathology.
Topics: Absorptiometry, Photon; Arthroplasty, Replacement, Hip; Australia; Corrosion; Hip Prosthesis; Humans; Metals; Prospective Studies; Prosthesis Design; Prosthesis Failure; Radiostereometric Analysis; Reoperation
PubMed: 26723860
DOI: 10.1016/j.arth.2015.10.004 -
AJNR. American Journal of Neuroradiology Dec 2012Imaging of the head and neck was initially described within the first year after Roentgen's discovery of the x-ray and was used to localize foreign bodies in the head...
Imaging of the head and neck was initially described within the first year after Roentgen's discovery of the x-ray and was used to localize foreign bodies in the head and neck area, including the orbital, laryngeal, and esophageal regions. Subsequently, x-rays were used to evaluate the air-filled paranasal sinuses, the pneumatized temporal bone, and the upper aerodigestive tract. Special views for evaluating these structures were developed by early investigators. As contrast agents were developed, a variety of invasive procedures were developed to assess the structures of the head and neck. CT and MR imaging were applied to the extracranial head and neck slightly later than the brain and spine; these modalities revolutionized head and neck radiology, finally allowing assessment of the deeper structures of this complex anatomic region.
Topics: Forecasting; Head; Humans; Neck; Neuroimaging; Radiography
PubMed: 23064595
DOI: 10.3174/ajnr.A3365 -
Journal of Clinical Imaging Science 2018Linear atelectasis is a focal area of subsegmental atelectasis with a linear shape. Linear atelectasis may occur as a consequence of subsegmental bronchial obstruction.
BACKGROUND
Linear atelectasis is a focal area of subsegmental atelectasis with a linear shape. Linear atelectasis may occur as a consequence of subsegmental bronchial obstruction.
AIMS
We propose an early roentgen sign of obstructing lung tumors, namely perihilar linear atelectasis, and ascertain whether this phenomenon could be used as a sign to detect radiographically occult primary lung cancer.
MATERIALS AND METHODS
We performed a retrospective review of 45,000 posteroanterior chest radiographs to determine the frequency of appearance and characteristics of perihilar linear atelectasis. The perihilar region of chest radiographs was evaluated for the presence of linear atelectasis. When linear atelectasis was found, the total thickness was measured. Student's -test was used to evaluate statistical significance, correlating the thickness of atelectasis and the presence of obstructing central primary lung cancer.
RESULTS
Perihilar linear atelectasis was demonstrated in 58 patients. Atelectasis was caused by an obstructing tumor in 21 (36%) cases and a variety of other conditions in 37 (64%) patients. A statistically significant relationship ( < 0.001) was observed between the dimension of perihilar linear atelectasis and primary lung cancer, with 16 of 19 patients with thick (>5.5 mm) perihilar linear atelectasis found to have primary lung cancer.
CONCLUSION
Thick perihilar linear atelectasis is a new diagnostic roentgen sign that suggests subsegmental bronchial obstruction. In this patient subgroup, who are otherwise asymptomatic, a persistent linear atelectasis can be due to primary lung cancer.
PubMed: 30123672
DOI: 10.4103/jcis.JCIS_35_18