Lovely whether on the first day of RSNA 2014

[update 24 March 2023: latest HRZ softwarecan be found on HRZ website - www.hrzkit.com]

It's that time of the year. I'm in Chicago again. Luckily, this year the whether is welcoming. We had a lovely two days and only this afternoon the temperatures are starting to drop. Tomorrow it's going to be below zero and hopefully it will get better during the rest of the week.

RSNA is a great opportunity to meet with colleagues and customers and see what's new and where things are going to. Apart from Big Data which is the number one interest right now, The two hot topics this year seems to be Image Sharing and Dose Recording and Monitoring (which I hope to cover on a future post). On the imaging side, I think the focal point is on Ultrasound technology that brings to the table its best up-side, no radiation damages! So Ultrasound has to evolve to the point where more and more anatomies and pathologies can be imaged with this great device. And it defiantly going that way. We're seeing giant steps in breast ultrasound imaging and many other fields will follow as hardware and software will evolve and mature. There's also the question of price and how it affects this technology. Ultrasound device is by 10's, 100's and 1000's less expensive to purchase and to operate compared with CT and MRI.

Image Sharing. Of course it links directly with big data which will also wait for a future post. As an ex-enterpuneer in this field with XRFiles, I'm always curious to see how the business model is built. One of the issues we had with XRFiles, apart from the misfortunate fact that we failed to raise money on it for various miserable reasons, was that patients don't want to see their images or any other medical data unless they really have to.

Video to DICOM (and back)

This is a story of a lost battle. For many years I refused to add MPEG to DICOM functionality in my DICOM SDK. The explanation I gave to myself and to my customers was that storing video in PACS is a bad idea because video streams are usually very big and nobody ever watches them. From an engineering point of view, the size of the video is not so much a matter of disk space but rather a network headache. The way that the DICOM network protocol works, with all the different levels of timeouts and with no failover mechanisms for PDU’s may cause such huge objects to fail over and over when stored and restored. For the clinical point of view, I consulted with Radiologists friends from whom I learned that the driving force behind keeping most of this stuff is not clinical but rather medico legal. These excuses held for some time but eventually, because I’m an engineer but also a businessman, I changed my mind. After all, the customer is always right, and when more and more customers asked to convert video to DICOM, I realized that winning this battle means loosing customers and that’s not something a businessman should do.

Videos were added to DICOM through the mechanism of Transfer Syntax. All together there are currently four (4) video transfer syntaxes for different types of MPEG’s. Here's the list of these transfer syntaxes:

• MPEG2 Main Profile @ Main Level : "1.2.840.10008.1.2.4.100"
• MPEG2 Main Profile @ High Level : "1.2.840.10008.1.2.4.101"
• MPEG-4 AVC/H.264 High Profile / Level 4.1 : "1.2.840.10008.1.2.4.102"
• MPEG-4 AVC/H.264 BD-compatible High Profile / Level 4.1 : "1.2.840.10008.1.2.4.103"

If I have to guess, there will probably be more added in the future as new formats of video gain take over. The embedded document option that was taken for PDF would probably be my choice but I admit that I didn’t investigate the reasons that led to the way the standard went and there may have

A short one on MPEG to DICOM

This is a quick post referencing our new release of RZDCX 2.0.4.2 that adds the option to convert MPEG to DICOM. I will post a longer article with all the information about MPEG and DICOM, video streams and audio hopefully by the end of this month. Meanwhile, check out this post on our web site and download the latest version of MODALIZER-SDK DICOM Toolkit.
Here's a short C++ code snippet that creates a DICOM encapsulated MPEG to start with:

static void CreateVideo(string filename)

{

    /// Create a DCXOBJ

    IDCXOBJPtr obj(__uuidof(DCXOBJ));

    /// Create an element pointer to place in the object for every tag

    IDCXELMPtr el(__uuidof(DCXELM));

IDCXUIDPtr id(__uuidof(DCXUID));

rzdcxLib::ENCAPSULATED_VIDEO_PROPS videoProps;

videoProps.width = 352;

videoProps.Height = 288;

videoProps.PixelAspectRatioX = 4;

videoProps.PixelAspectRatioY = 3;

videoProps.FrameDurationMiliSec; // 40 msec = 25 FPS

videoProps.NumberOfFrames = 1600; // 1600 frames

videoProps.VideoFormat = rzdcxLib::MPEG2_AT_MAIN_LEVEL;

obj->SetVideoStream(filename.c_str(), videoProps);

obj->TransferSyntax = rzdcxLib::TS_MPEG2_MAIN_PROFILE_AT_HIGH_LEVEL;

    /// You don't have to create an element every time, 

    /// just initialize it.

char pn[]="John^Doe";

    el->Init(rzdcxLib::PatientsName);

    el->PutCStringPtr((int)pn);

    obj->insertElement(el);

el->Init(rzdcxLib::patientID);

    el->Value = "123765";

    obj->insertElement(el);

el->Init(rzdcxLib::studyInstanceUID);

el->Value = id->CreateUID(UID_TYPE_STUDY);

obj->insertElement(el);

el->Init(rzdcxLib::seriesInstanceUID);

el->Value = id->CreateUID(UID_TYPE_SERIES);

obj->insertElement(el);

el->Init(rzdcxLib::sopInstanceUID);

el->Value = id->CreateUID(UID_TYPE_INSTANCE);

obj->insertElement(el);

el->Init(rzdcxLib::sopClassUid);

el->Value = "1.2.840.10008.5.1.4.1.1.77.1.4.1"; // Video Photographic Image Storage

obj->insertElement(el);

el->Init(rzdcxLib::NumberOfFrames);

el->Value = (short)1600;

obj->insertElement(el);

el->Init(rzdcxLib::FrameIncrementPointer);

el->Value = rzdcxLib::FrameTime;

obj->insertElement(el);

filename += ".dcm";

obj->saveFile(filename.c_str());

}

One last note: You should know your video properties because we don't open or validate the MPEG file. More on "why is it this way" in the longer post soon.

DICOMIZER 3.0.3 Release Notes

[update 24 March 2023: latest HRZ softwarecan be found on HRZ website - www.hrzkit.com]

The new build of DICOMIZER 3.0.3 is now available on our web site. This build addresses couple of minor issues that were found since the last release.

#155 License is installed only for installed user
#157 Default MWL query with Local AE Title checkbox use wrong AE
#159 Make "Thank you" on the activation end screen clickable

The new DICOMIZER is available for free 30 days evaluation. It was released few weeks ago and we get great feedback on it.

The most notable feature of the DICOMIZER 3.0 is the TWAIN/WIA interface that connects to supporting devices. The user can capture images directly from DICOMIZER and convert them to DICOM files.

It's the kitchen table for me

Written Expression Skills is the #1 requirement from every member in a  distributed development team

I love working from the kitchen table. After everyone in the house has left to their day, I take my laptop, a paper pad, a pencil, today's newspaper and a cup of Espresso and enjoy the silence and the space. These are my most productive hours. The kitchen's radio is playing classical music and I dive deep into my work.

Working from the Kitchen Table

Some members in our team live just few blocks away from each other, others live in another city and some are hundreds of miles away. It doesn't make much difference. Physical distance plays lesser role today then time zone.

Like our team, there are many others. They have learned to collaborate with team members that rarely meet face to face. People from different nations and different cultures that share a common passion to software and computers, byte crunchers, geeks, designers, artists, that enjoy the great versatility of the digital world.

Some of us maybe in different locations, away from the others, but they are not alone because we have a live and active communication channel, through which we are writing emails, chatting, sending smileys :) and thumbs ups (y), tickets and documents that we use to create great things together.

The internet opened new doors for international collaboration. Good communication has always been a key to success in almost everything and as communication became more and more efficient, successful projects get completed faster and better today then ever before.

But while this works in favor of team members that no longer need to spend hours commuting or others that get better paying oportunities, virtual teams sets new challenges to managers. Marisa Mayer decided that working from home is not good for Yahoo and shut it down. Intel on the other hand encourage employees to work from home ocasionally.

Managers of the traditional office work environment, that have strengths like charisma, excellent Verbal Expression Skills, eye contact, even looks, may

DICOMIZER 3.0 Beta 1 with TWAIN/WIA and DICOM SR

[update 24 March 2023: Latest releases of HRZ software can be found on HRZ website - www.hrzkit.com]

I'm very happy to announce our new DICOMIZER 3 is now available for download and evaluation.
This version has both TWAIN/WIA API and DICOM Structured Reports.
Adding the image capture and reporting makes the DICOMIZER 3 a complete product for patient encounter documentation.
DICOMIZER 3 also features enhanced viewer with Cine and improved performance.

The table bellow compares DICOMIZER 3 with the older DICOMIZER 2 that is still available for evaluation and purchase, now in a reduced price.

TWAIN/WIA	TWAIN/WIA Image Capture
DICOM SR	Compose and add Structured Report to Study
Convert	JPEG to DICOM
	BMP to DICOM
	PNG to DICOM
	PDF to DICOM
	Create DICOM Multiframe Objects
	Conversion Templates
	DICOM to JPEG (Save As)
	Converted Images Preview
	Converted Images Thumbnails
DICOM Viewer	Multi-Modality DICOM Viewer
	DICOM Header Display with Search
	Optimized Instant load of long cine runs
	Send from Viewer to PACS
	Open file location
DICOM CD/DVD	Burn DICOM CD/DVD
	Add DICOM CD Viewer to Burned CD
DICOM Network	Modality Worklist Query
	Modality Worklist Query Advanced Search	(less fields)
	Qurery/Retrieve SCU (C-FIND/C-MOVE)	(less fields)
	Q/R Auto Display
	Send converted DICOM Files to PACS (C-STORE)
	Send Other DICOM FIles to PACS (C-STORE)
	Verification (C-ECHO)
	DICOM Logs

Unlinke DICOMIZER 2, this version requires email registration to evaluate. We do this hoping to have better connection with our users and customers. The evaluation license is valid for 30 days.