Enabling multi-site intra spinal canal dosimetry of transcutaneous photobiomodulation therapy on cadaver dogs using a custom designed, flexible, 9-channel photo-diode probe (Conference Presentation)

There are cases when symptoms are available but no abnormal stenosis is found in MRI and vice versa. Axial-loaded MRI has been shown that it can demonstrate more accurately the real status of spinal canal stenosis than conventional MRI. This is the first time we applied a new system that we have recreated from the original loading frame system in order to fit with the demands of Vietnamese people. Sixty-two patients were selected from Phu Tho Hospital in Phu Tho Province, Vietnam, who fulfilled the inclusion criteria. The Anterior-posterior diameter (APD), Dura Cross-sectional Area (DSCA) in conventional MRI and axial loaded MRI, and changes in APD and DCSA were determined at the single most constricted intervertebral level. The APD and DCSA in axial loaded MRI had very good significant correlations with VAS for back pain (rs=0.83, 0.79), leg pain (rs=0.69, 0.57) and JOA score (rs=0.70, 0.65). APD and DCSA in axial loaded MRI significantly correlated with the severity of symptoms. Our axial loading MRI provides more valuable information than the conventional MRI for assessing patients with LSCS.

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MODIFIED LAMINOPLASTY AFTER EXCISION OF CERVICAL SCHWANNOMA WITH LARGE EXTRAVERTEBRAL EXTENSION

Neurologico Spinale Medico Chirurgico ◽

10.15562/nsmc.v1i1.3 ◽

2018 ◽

Vol 1 (1) ◽

pp. 9

Author(s):

Muhammad Faris ◽

Abdul Hafid Bajamal ◽

Zaky Bajamal ◽

Krisna Tsaniadi Prihastomo

Keyword(s):

Surgical Treatment ◽

Spinal Canal ◽

Conventional Technique ◽

Modified Technique ◽

Younger Patients ◽

Knowing That ◽

Anteroposterior Diameter ◽

Intradural Extramedullary ◽

Intradural Extramedullary Tumour

Tumour excision and laminoplasty are commonly performed as surgical treatment of extra vertebral extension of cervical schwannoma. It is worth knowing that the conventional technique of multilevel laminectomy may hinder younger patients in the long-term. This article reports a 30-year old man with an intradural-extramedullary tumour which extended from C4 to T1 that underwent modified laminoplasty. This modified technique is preferable in maintaining the anteroposterior diameter of spinal canal as well as reducing the displacement of guttered laminae

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Clinical and Radiographic Correlation (According to CT) in Patients with Degenerative Lumbar Spinal Stenosis

Medical Visualization ◽

10.24835/1607-0763-2017-5-124-130 ◽

2017 ◽

pp. 124-130 ◽

Cited By ~ 1

Author(s):

S. G. Mlyavykh ◽

A. Y. Aleynik ◽

A. E. Bokov ◽

M. V. Rasteryaeva ◽

M. A. Kutlaeva

Keyword(s):

Ct Scan ◽

Spinal Canal ◽

Clinical Manifestations ◽

Intervertebral Discs ◽

Morphometric Parameters ◽

Neurogenic Claudication ◽

Clinical Group ◽

Lumbar Stenosis ◽

Degenerative Lumbar Spinal Stenosis ◽

Lumbar Spinal

Сomputed tomography (CT) is widely used in the diagnosis of degenerative pathology of the lumbar spine, but the relationship between clinical manifestations of lumbar stenosis and its anatomical prerequisites has not been sufficiently studied to date.The objective: to determine the significance of the morphometric parameters of lumbar stenosis according to CT scans and to establish their relationship with the prevailing symptoms of the disease.Material and methods. Seventy-five consecutive patients with clinically significant lumbar stenosis who underwent CT scan before surgery were enrolled in this study. The average values of thirteen different morphometric parameters were calculated at LIII–SI levels of the intervertebral discs and of the pedicels in the axial and sagittal views. The possibility of classification of clinical observations and the correlation of morphometric parameters with the clinical forms of lumbar stenosis were investigated using discriminant and logistic regression analysis. Results. CT scan with high probability allocates patients with predominant symptoms of neurogenic claudication or bilateral radiculopathy. The most significant morphometric predictors of this clinical group are the depth of the lateral recesses and the cross-sectional area of the spinal canal.Conclusion. CT scan significantly expands the informative value of magnetic resonance imaging and can be used in planning the decompressive stage of the surgery intervention in patients with lumbar spinal canal stenosis.

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Single Point PICA Probing with an Avalanche Photo-Diode

ISTFA 2001: Conference Proceedings from the 27th International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa2001p0023 ◽

2001 ◽

Author(s):

Mike Bruce ◽

Rama R. Goruganthu ◽

Shawn McBride ◽

David Bethke ◽

J.M. Chin

Keyword(s):

Single Photon ◽

Single Point ◽

Photon Counting ◽

Ring Oscillator ◽

Time Resolved ◽

Single Photon Counting ◽

Photo Diode ◽

Avalanche Photo Diode ◽

Photo Multiplier Tube ◽

Channel Plate

Abstract For time resolved hot carrier emission from the backside, an alternate approach is demonstrated termed single point PICA. The single point approach records time resolved emission from an individual transistor using time-correlated-single-photon counting and an avalanche photo-diode. The avalanche photo-diode has a much higher quantum efficiency than micro-channel plate photo-multiplier tube based imaging cameras typically used in earlier approaches. The basic system is described and demonstrated from the backside on a ring oscillator circuit.

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