Top videos

Bone Scan Introduction
Bone Scan Introduction Mohamed 17,994 Views • 3 years ago

A Bone scan or bone scintigraphy is a nuclear scanning test to find certain abnormalities in bone which are triggering the bone's attempts to heal. It is primarily used to help diagnose a number of conditions relating to bones, including: cancer of the bone or cancers that have spread (metastasized) to the bone, locating some sources of bone inflammation (e.g. bone pain such as lower back pain due to a fracture), the diagnosis of fractures that may not be visible in traditional X-ray images, and the detection of damage to bones due to certain infections and other problems.

Nuclear medicine bone scans are one of a number of methods of bone imaging, all of which are used to visually detect bone abnormalities. Such imaging studies include magnetic resonance imaging (MRI), X-ray computed tomography (CT) and in the case of 'bone scans' nuclear medicine. However, a nuclear bone scan is a functional test, which means it measures an aspect of bone metabolism, which most other imaging techniques cannot. The nuclear bone scan competes with the FDG-PET scan in seeing abnormal metabolism in bones, but it is considerably less expensive.

Nuclear bone scans are not to be confused with the completely different test often termed a "bone density scan," DEXA or DXA, which is a low exposure X-ray test measuring bone density to look for osteoporosis and other diseases where bones lose mass, without any bone re-building activity. The nuclear medicine scan technique is sensitive to areas of unusual bone re-building activity because the radiopharmaceutical is taken up by osteoblast cells which build bone. The technique therefore is sensitive to fractures and bone reaction to infections and bone tumors, including tumor metastases to bones, because all these pathologies trigger bone osteoblast activity. The bone scan is not sensitive to osteoporosis or multiple myeloma in bones, and therefore other techniques must be used to assess bone abnormalities from these diseases.

Polycystic Ovary Syndrome
Polycystic Ovary Syndrome samer kareem 17,991 Views • 3 years ago

Polycystic ovary syndrome is a common endocrine system disorder among women of reproductive age. Women with PCOS may have enlarged ovaries that contain small collections of fluid — called follicles — located in each ovary as seen during an ultrasound exam. Infrequent or prolonged menstrual periods, excess hair growth, acne, and obesity can all occur in women with polycystic ovary syndrome. In adolescents, infrequent or absent menstruation may raise suspicion for the condition. The exact cause of polycystic ovary syndrome is unknown. Early diagnosis and treatment along with weight loss may reduce the risk of long-term complications, such as type 2 diabetes and heart disease.

what happens to pill when it swallowed
what happens to pill when it swallowed samer kareem 17,981 Views • 3 years ago

Discover what happens to pill when it swallowed

Surgical Removal of Mucocele from Lower Lip
Surgical Removal of Mucocele from Lower Lip Doctor 17,980 Views • 3 years ago

Surgical removal of mucocele from lower lip

Super Model's Butt and Leg Implants Exploded
Super Model's Butt and Leg Implants Exploded hooda 17,972 Views • 3 years ago

Watch that video of Super Model's Butt and Leg Implants Exploded

Anatomy of The Superficial Dissection of The Upper and Lower Limbs
Anatomy of The Superficial Dissection of The Upper and Lower Limbs Anatomy_Videos 17,944 Views • 3 years ago

Anatomy of The Superficial Dissection of The Upper and Lower Limbs

Menstrual Cramps
Menstrual Cramps samer kareem 17,938 Views • 3 years ago

Menstrual cramps (dysmenorrhea) are throbbing or cramping pains in the lower abdomen. ... Menstrual cramps may be caused by identifiable problems, such as endometriosis or uterine fibroids. Treating any underlying cause is key to reducing the pain

Endoscopic Third Ventriculostomy
Endoscopic Third Ventriculostomy M_Nabil 17,934 Views • 3 years ago

Endoscopic third ventriculostomy in a patient with obstructive hydrocephalus

Histopathology of Graves Disease
Histopathology of Graves Disease Mohamed 17,917 Views • 3 years ago

Histopathology of Graves Disease

Laparoscopic Assisted Right Hemicolectomy
Laparoscopic Assisted Right Hemicolectomy ashrafhamadasurgery 17,907 Views • 3 years ago

Laparoscopic Assisted Right Hemicolectomy

Bronchiectasis
Bronchiectasis samer kareem 17,904 Views • 3 years ago

Bronchiectasis is an abnormal dilation of the proximal and medium-sized bronchi (>2 mm in diameter) caused by weakening or destruction of the muscular and elastic components of the bronchial walls. Affected areas may show a variety of changes, including transmural inflammation, edema, scarring, and ulceration, among other findings. Distal lung parenchyma may also be damaged secondary to persistent microbial infection and frequent postobstructive pneumonia. Bronchiectasis can be congenital but is most often acquired.[9] Congenital bronchiectasis usually affects infants and children. These cases result from developmental arrest of the bronchial tree. Acquired forms occur in adults and older children and require an infectious insult, impairment of drainage, airway obstruction, and/or a defect in host defense. The tissue is also damaged in part by the host response of neutrophilic proteases, inflammatory cytokines, nitric oxide, and oxygen radicals. This results in damage to the muscular and elastic components of the bronchial wall. Additionally, peribronchial alveolar tissue may be damaged, resulting in diffuse peribronchial fibrosis.[12] The result is abnormal bronchial dilatation with bronchial wall destruction and transmural inflammation. The most important functional finding of altered airway anatomy is severely impaired clearance of secretions from the bronchial tree. Impaired clearance of secretions causes colonization and infection with pathogenic organisms, contributing to the purulent expectoration commonly observed in patients with bronchiectasis. The result is further bronchial damage and a vicious cycle of bronchial damage, bronchial dilation, impaired clearance of secretions, recurrent infection, and more bronchial damage

The Most Amazing Plastic Surgeries
The Most Amazing Plastic Surgeries hooda 17,893 Views • 3 years ago

Watch that video of The Most Amazing Plastic Surgeries

Intercostal Nerve Block
Intercostal Nerve Block M_Nabil 17,892 Views • 3 years ago

Intercostal Nerve Block

Giant Spigelian Strangulated Hernia
Giant Spigelian Strangulated Hernia DrHouse 17,892 Views • 3 years ago

Giant spigelian stranguled hernia with small bowel loop and omental flap inside. The omentum required resection, the bowel appears vital. After the handle of hernia sac and his content has been done, a overlapped prolene repair will be done.

Surgical Knot
Surgical Knot Scott 17,884 Views • 3 years ago

Surgical Knot

Cranial Nerves Examination
Cranial Nerves Examination Doctor 17,880 Views • 3 years ago

Medical Examination of the cranial nerves

Shoulder Injection
Shoulder Injection DrPhil 17,878 Views • 3 years ago

Shoulder Injection

Ectopic Pregnancy Abortion Surgery
Ectopic Pregnancy Abortion Surgery hooda 17,865 Views • 3 years ago

Watch that Ectopic Pregnancy Abortion Surgery

Sclerotherapy for varicose veins
Sclerotherapy for varicose veins Scott 17,861 Views • 3 years ago

Sclerotherapy for varicose veins

Gait after total knee replacement
Gait after total knee replacement A.K. Venkatachalam 17,860 Views • 3 years ago

Video shows improvement of gait after a total knee replacement in the same patient. The sideways lurch has been abolished. This was possible by bone grafting and an advanced revision knee system.
Surgery performed at the MJRC, http://www.kneeindia.com/blog
http://www.kneeindia.com

Showing 70 out of 71