Top videos

Laparoscopic Retrpcecal Appendectomy
Laparoscopic Retrpcecal Appendectomy Mohamed Ibrahim 14,544 Views • 2 years ago

The words “laparoscopic” and “open” appendectomy describes the techniques a surgeon uses to gain access to the internal surgery site. Most laparoscopic appendectomies start the same way. Using a cannula (a narrow tube-like instrument), the surgeon enters the abdomen. A laparoscope (a tiny telescope connected to a video camera) is inserted through a cannula, giving the surgeon a magnified view of the patient’s internal organs on a television monitor. Several other cannulas are inserted to allow the surgeon to work inside and remove the appendix. The entire procedure may be completed through the cannulas or by lengthening one of the small cannula incisions. A drain may be placed during the procedure. This will be removed later by your surgeon.

Gynecomastia (ARABIC) د. محمد الروبى تصغير الثدى للرجال
Gynecomastia (ARABIC) د. محمد الروبى تصغير الثدى للرجال Mohamed El-Rouby 21,624 Views • 2 years ago

تضخم الثدى عند الرجال من المشاكل المنشرة جدا بين الشباب و تسبب الكثير من المشاكل النفسية و الصحية
د. محمد الروبى
استشارى جراحات التجميل - جامعة عين شمس

Hand Surgery Device (HAND FIXATION PLATFORM)
Hand Surgery Device (HAND FIXATION PLATFORM) DrHouse 14,036 Views • 2 years ago

The device has as great advantage that the accessibility increases in the hand, it maximizes the surgical area free of obstacles, it increases its functional versatility, for the material with the one that this made a maximum of durability is guaranteed, so that it can be sterilized in any team and it facilitates that the thumb is supported in relaxation state.
The considerable reduction of the surgical time of each intervention is inside the advantages that it provides this valuable instrument, also facilitating that they are executed with more security. For the stability that provide, it can also be used in bony fabrics of the hand. The instrument is both handle, of very easy use and great comfort in its handling. The standardization of most of its pieces makes it very simple. The solutions that are offered in this device for the subjection of the fingers and other parts of the hand are a novelty, but they also have the advantage that it commits very little surgical area and it guarantees a maximum of subjection staying the totally stable hand facilitating in great measure the surgeon's work. These pieces adapt to any diameter of fingers.

From axons to tracts
From axons to tracts Mohamed 21,060 Views • 2 years ago

The complex circuitry interconnecting different areas in the brain, known collectively as white matter, is composed of millions of axons organized into fascicles and bundles. Upon macroscopic examination of sections of the brain, it is difficult to discern the orientation of the fibers. The same is true for conventional imaging modalities. However, recent advancements in magnetic resonance imaging (MRI) make such task possible in a live subject. By sensitizing an otherwise typical MRI sequence to the diffusion of water molecules it is possible to measure their diffusion coefficient in a given direction1. Normally, the axonal membrane and myelin sheaths pose barriers to the movement of water molecules and, thus, they diffuse preferentially along the axon2. Therefore, the direction of white matter bundles can be elucidated by determining the principal diffusivity of water. The three-dimensional representation of the diffusion coefficient can be given by a tensor and its mathematical decomposition provides the direction of the tracts3; this MRI technique is known as diffusion tensor imaging (DTI). By connecting the information acquired with DTI, three-dimensional depictions of white matter fascicles are obtained4. The virtual dissection of white matter bundles is rapidly becoming a valuable tool in clinical research.

Our journey begins with a transverse section of tightly packed axons as seen through light microscopy. Although represented as a two-dimensional "slice", we see that these axons in fact resemble tubes. A simulation of water molecules diffusing randomly inside the axons demonstrates how the membranes and myelin hinder their movement across them and shows the preferred diffusion direction --along the axons. The tracts depicted through DTI slowly blend in and we ride along with them. As we zoom out even more, we realize that it is a portion of the corpus callosum connecting the two sides of the brain we were traveling on and the great difference in relative scale of the individual axons becomes evident. The surface of the brain is then shown, as well as the rest of the white matter bundles--a big, apparently chaotic tangle of wires. Finally, the skin covers the brain.

With the exception of the simulated water molecules, all the data presented in the animation is obtained through microscopy and MRI. Computer algorithms for the extraction of the cerebral structures and a custom-built graphics engine make our journey through the brain's anatomy possible in a living person.

Micrograph courtesy of Dr. Christian Beaulieu, University of Alberta.
Music by Mario Mattioli.

References:
1. Stejskal, E.O., et al., J. Chem. Phys., 1965. 42:
2. Beaulieu, C., NMR Biomed., 2002. 15:435-55.
3. Basser, P.J., et al., J. Magn. Reson. B, 1994. 103:247-54.
4. Mori, S., et al., NMR Biomed., 2002. 15:468-80.

Aortic Valve Replacement
Aortic Valve Replacement M_Nabil 11,842 Views • 2 years ago

Aortic Valve Replacement Animation

Combined Spinal-Epidural Obstetric Anesthesia
Combined Spinal-Epidural Obstetric Anesthesia DrPhil 13,735 Views • 2 years ago

Combined Spinal-Epidural Obstetric Anesthesia

One Hand Tie
One Hand Tie DrPhil 12,881 Views • 2 years ago

Demonstration of a one-hand tie for suturing in the operating room.

Surgery without Stitches
Surgery without Stitches Mohamed Ibrahim 10,262 Views • 2 years ago

A thin polymer film that seals surgical wounds could make sutures a relic of medical history.

Measuring just 50 microns, the film is placed on a surgical wound and exposed to an infrared laser, which heats the film just enough to meld it and the tissue, thus perfectly sealing the wound. Known as Surgilux, the device's raw material is extracted from crab shells and has Food and Drug Administration approval in the US

USMLE Step 2 CS - Bloody Urine
USMLE Step 2 CS - Bloody Urine usmle tutoring 7,251 Views • 2 years ago

USMLE Step 2 CS - Bloody Urine This is just preview video. To get full access please visit our website : www.usmletutoring.com

CPR in a patient with Advanced Airway Managment
CPR in a patient with Advanced Airway Managment Doctor 11,640 Views • 2 years ago

CPR in a patient with Advanced Airway Managment such as a patient with endotracheal tube or combitube is different than performin normal CPR. This video shows how to perform that.

Embryo and Fetal Development
Embryo and Fetal Development Doctor 10,643 Views • 2 years ago

A video showing Embryo and Fetal Development

Nissen Laparoscopic Fundoplication Acid Reflux Surgery Stomach
Nissen Laparoscopic Fundoplication Acid Reflux Surgery Stomach Scott Stevens 9,343 Views • 2 years ago

Nissen Laparoscopic Fundoplication Acid Reflux Surgery Stomach

Vaginismus Pain Management
Vaginismus Pain Management Medical_Videos 18,398 Views • 2 years ago

Vaginismus Pain Management

Anatomy of The Abdominal Autonomic Nerve Supply
Anatomy of The Abdominal Autonomic Nerve Supply Anatomy_Videos 7,064 Views • 2 years ago

Anatomy of The Abdominal Autonomic Nerve Supply

Histology of Kidney
Histology of Kidney Histology 9,047 Views • 2 years ago

Histology of Kidney

Histology of Submandibular Gland
Histology of Submandibular Gland Histology 6,350 Views • 2 years ago

Histology of Submandibular Gland

4 Steps to Lose Belly Fat in one Week
4 Steps to Lose Belly Fat in one Week samer kareem 1,207 Views • 2 years ago

Types of Bone Fracture
Types of Bone Fracture samer kareem 12,826 Views • 2 years ago

Common types of fractures include: Stable fracture. The broken ends of the bone line up and are barely out of place. Open, compound fracture. The skin may be pierced by the bone or by a blow that breaks the skin at the time of the fracture. ... Transverse fracture. ... Oblique fracture. ... Comminuted fracture.

Dental Implant
Dental Implant samer kareem 7,682 Views • 2 years ago

If you are self-conscious because you have missing teeth, wear dentures that are uncomfortable or don't want to have good tooth structure removed to make a bridge, talk to your dentist to see if dental implants are an option for you. Dental implants are a popular and effective way to replace missing teeth and are designed to blend in with your other teeth. They are an excellent long-term option for restoring your smile. In fact, the development and use of implants is one of the biggest advances in dentistry in the past 40 years. Dental implants are made up of titanium and other materials that are compatible with the human body. They are posts that are surgically placed in the upper or lower jaw, where they function as a sturdy anchor for replacement teeth.

Parathyroid Surgery
Parathyroid Surgery samer kareem 15,665 Views • 2 years ago

Surgery is the only way to treat parathyroid disease (hyperparathyroidism). There are no medications or pills that work to cure or treat parathyroid problems or high calcium. The parathyroid tumor must be removed by a surgeon. As soon as the parathyroid tumor has been removed, you are cured! It is very likely this will change your life. If you have hyperparathyroidism you need to have parathyroid surgery. If you have an expert surgeon this operation should be very easy.

Showing 312 out of 378